After a few years do you need to update your blurbs/covers?
A few years ago I used to write fan fiction for Warframe on AO3 and that eventually led to the creation of my own sci-fi/space opera trilogy which the first year seemed like it started to get some traction. Reviews, while not very many, were positive and eventually had one of the VA's from the game voice my audio books.
Fast forward to the present and it seems sales have just stopped for me as of a couple months ago, even the free downloads have been lackluster compared the thousands I'd see in the past. I have not been advertising anymore, which is probablyt he biggest culprit I guess, but I figured at some point I wouldn't need to anymore...I'm clearly wrong here.
I'm thinking I should restart my marketing efforts again and maybe also update my blurbs and/or covers.
Before I do all that though, I'd like to get thoughts from other writers as far as how often you have updated covers and/or blurbs for your books?