I have the anking overhaul and was subscribed with ankihub 2 months ago
Today I resubscribed to update my deck but the add on said that I need to install the deck because I donโt have it !!
Iโm worried that if I install it my 5 years studying will go in vain please help me
You can just press install donโt worry.
Also Anki saves a ton of backups so if anything goes wrong you can just go back to one of the backups.