Yeah @Reece , I failed in my first attempt today 
, was having most of the problems that are filling this thread, but tomorrow iz another day, but first Iām gonna factory reset my onn4k Pro,
Ill do that also but on an onn4k plus. Thanks!
Well after reading about Nuvio for a few days, I had to try it. Just watch troy points video, very easy setup. To put in comet or Torrentio. Open stremio go to your addons pick the one you want, click Share addon. Copy the link open nuvio> add addon>paste URL, give it a name, hit, save it automatically loads in addons. I like this, very good app. Hopefully it hangs around and stays free. And did this on my onn 4k pro and Nividia Shield
Cool deal @Explorer , but I think most of the problems might be some of us, at least me, donāt already have Stremio, and I also didnāt have a QR reader app, an the first one i got from the Play store took over my phone, an I had a heck of a time uninstalling it 
Yes, after I had it set up the QR reader made it so easy to install it on my streaming boxes, AT first I did followed Troy directions I did not know that I could copy from stremio. that made it easy
I didnāt have Stremio and I donāt know what a QR reader App is? You donāt need it. You just log into Nuvio on your phone, then open the Nuvio app on your streaming device and when you see the QR code just open the camera on your phone and aim it at the QR code and wait a bit. It should log you in
@SoloWarrior, I am not doubting you, but pointing my phone camera at the QR didnāt work for me, thatās why I went an got the reader app, and that did work, but like others have stated, the PC shows all good, but the phone and my Onn4k Pro would not show the Torrentio , I even synced them both, with a confirmation, but they did notā¦. so Iāll try again but not tonight
Certain factory camera apps donāt have auto QR read baked in. My previous oneplus phone had a separate QR read button next to the viewfinder. My new oneplus camera app automatically detects and decodes the QR when in the viewfinder.
On some older models, you had no choice but to download a 3rd party QR reader app.
Glad you got it to work though.
Aye, you can only lead the old so far. It then is up to us to release those stubborn Brain Farts.
Our Memory Holes are much deeper & treacherous than our younger successors, we need words of encouragement sometimes to climb down them to awaken them.
Old Dogs donāt learn new tricks, itās simply too dangerous for us. We just moan groan grunt and brain fart new trailsā¦.
Thank You Kindly Miki, you are much appreciated.
Jeffrey The Elder 
So with most things, Iām generally content with a form following function mentality. Thatās why for the last few days, I wasnāt motivated to install Nuvio, as it seemed like Stremio with better makeupā¦and Stremio continues to work great.
Same with Syncler as Iāve been content with the original version (though I did install a clean v2 on my travel Onn) and happily continue to use it on my primary shield.
However, I do have a propensity to cave in to peer pressure in cases and installed Nuvio tonight and took it for a drive on this snowy 1AM night.
ā¦my first thought after parking itā¦āMan, this is pretty sweet.ā Maybe because it reminds me so much of the Syncler UI, which I like, but the refined source listing info, metadata, and content warnings are damn cool. 
Oh to be young again, but at 71 those days are long behind me. Have a buffer free day.
Hi Powerfader.
I got it working now, Thanks for all your help. Great job.
Did you get this sorted? What app or browser are you using to download/install the apk/app?
Yet another update. Love it. Now my Library/Series are in grid form and I can choose alphabetically for arrangement. Looking good. 
Also I added my MBDList API key and enabled all options in the settings/integration as well as enabling all the TMDB options and now when I click on a series or movies the actors are listed as well as the creator and when clicking on their pic it brings up info about them and at the bottom pics of the stuff they are in. This is so awesome. I love info. Tx devs
Same for me, everything shows as there on my laptop, and everything works fine on my phone, but on my Formuler Z 11 Pro Max Torrentio doesnāt show up, so nothing will load. I donāt get itā¦
Are you using a VPN? If so, try deactivating that temporarily and see if it shows up after doing that. Seems that Torrentio has been blocking some VPN servers lately. If it works after deactivating VPN then try connecting to a different VPN server and keep testing til you find a server that works and isnāt blocked. This seems like the biggest problem regarding Torrentio addon.
Or, do what @Miki suggests and use the Comet addon instead.
It works the same way Torrentio works. Input your debrid service in the config page of Comet, copy link and then paste that into Nuvio dashboard.
Iāll try both and see how it goes.
Thank you, Steve
Both worked, Comet and changing VPN locations, just like that everything is working as it should.
Thank youā¦.
10th time is charm! It finally went thru I think with the update. Now, subtitles are way off and it sems from a different episode
Yes, restarting the ONN device was the clear fix since I tried the prior steps multiple times to no avail and once the ONN device was restarted, all Add-ons appeared.