Guide for some issues - Github
1. [!] Access token expired. Reauthenticating...
It means that your google app verfication code is no longer in use.
You have to get a new verify code from Google
2. [Farm Pokestops - ERROR]: System.InvalidOperationException: Sequence contains no elements
You need to enable the recycle item in order to fix this issue.
3. Bot don't look any pokestops, don't catch Pokemons...
Probably you got IP ban. Change your IP, using any IP changer.
You must change IP to the country where your account been farming.