Well. Never seen such an alert, so I do not know how noticeable it would be.
If you are doubly sure you did not touch your keyboard, you should check, if you have any malware or other suspicous activity. Decimal points do not just vanish.
Have you maybe some helper in your browser that screws with "," and "." for numbers? Locales or anything like that? Your questionmark after somehow seems odd too.
I do not know if they fasttrack certain issues, but itch staff is swamped right now, so there might be a waiting time. Read: a week or longer.