I lost my FA account weeks back due to the problem Furaffinity experienced.
It lasted few weeks, but I finally got a reply from FurAffinity.
I am writing this in confirmation that I indeed own this account of the same name. I have seen other people discussing about the FA issue recommending that we should prove our identity via showing our personal accounts on other pages.
I am sending them my submitted artwork that is an unedited piece of one of my submissions as a further proof. Hopefully that will prove my identity beyond doubt.

Edit:
Two weeks later, I got the account restored. Hurray!