I'm sorry that you are experiencing this issue, but note that this is a
community support section. You are asking peers, not employees. Other users are helping you here, not the Chevereto Staff.
We told you to go for manual update. Is this something too complicated?
You didn't open a
Tech Support ticket which tells us that you are having issues dealing with this but you don't want the hassle of debugging it on you own. In that case consider purchasing extra support if you need official help with this. Otherwise read the indications and follow the instructions.
Documentation for Chevereto image hosting software (V3)
v3-docs.chevereto.com