I am on the pay as you go plan. If I buy some credits but don't login for 7 days and the computer is deleted, do the credits I bought expire?
No they do not, my Internet was disconnected and I didn't come back for months and I still had all of my credits. I even had all my data for my computer for the first day, I copied what I needed, luckily because I had to delete the computer the next day. (but don't expect yourself to be so lucky lol)