Ok as @Matteos said let try to find the repo.
Go to Addons section. Click below where is says “install from Repo”. Click down until you see Magnetic Repo. Click and select video addons. Select Mad Titan sports v2.0 and install.
It should be there as it comes pre-installed on the build. While you are there install jetproxy as well. Youll be asked to dl it later anyway.
If its not there, download the build again from the wizard. It should keep all of your rd accounts logged in. Just dl over the current build not a fresh install.
Edit. Thought it kept your trakt account but you may need to reauthorize.