Plutonium

Hello everyone, I have a problem in which, first of all, every time I open the launcher it asks me to log in my account again, even though I have already logged in several times. Also, after I have already entered my account, when I try to install BO1, absolutely nothing happens. I have tried downloading the files again, deleting the previous files and I have made sure every time that the folder I select is the correct one (pluto_t5_full_game) and I don't know what to do or what else to try.
If anyone has any idea how to fix it or has already fixed it previously I would really appreciate your help.