App constant Log out and 2 step verification

I recently purchased Ring Doorbell for my 78 yr old Father, he is not a tech wizard but he can get by and does quite well with his Smartphone, However, this Ring App is frustrating the living daylights out of both him and Myself. The App continues to log him out almost daily, nobody seems to be able to find a solution for this at all but the issue is then doubled because of 2 step verification. It confuses him immensely. He attempts to log in with username and password but then it sends him the verification code via email, he then needs to go to his email app or text app to receive the code, once he does this he then returns to the Ring App that has then promptly logged him out again and has to go thru the whole process again, so around and around he goes, remember, he is 78. He then gives up which renders the purpose of him having a security device pointless! The App logging him out constantly is frustrating enough but surely just letting him type username and password to log back in would alleviate this frustration?? Why can we not have the choice of 2 Step on or off?? His Doorbell is logged off for days until I can visit him again and lig him back in but then only for it to log him back out the following day. I have a ring doorbell myself too which i do find great but oh boy does the App let it down. We're going to have to try and find my Father a better system than this I think.