Hi! I don't know if you're still dealing with invisible asks, but in my experience that happens from blocking someone without deleting the ask you got from them! So if you get anon spam and hit block those messages still exist, they're just hidden because they're from a blocked account.
This is a logical conclusion, but the only blogs I have blocked are sex-bots (I am not here to see naked women), which I doubt have messaged me, and Tubi (to get rid of that creepy flesh-hat boy) who I don't think know I exist, so. I suppose I will unblock and reblock them one by one and see what happens?
I've only blocked like. five blogs total, so hopefully it's a quick fix.












