I received my payment 3 days ago with no trouble, but then it showed "signature not found" just now when I haven't touched my signature at all. I have no idea why and how it happened, so maybe OP you could investigate on it.
It would be cool if you can add the missing 4 posts back to my "New posts" counter. Thanks.
EDIT: After some testing, I found how to reproduce my problem. Evenytime after I change my bitcoin address on my profile, I will get the "signature not found" for some reasons.
maybe try to copy the new sig code in the OP as the admin stated, maybe they changed some codes
Update: I believe I found how it happened.
The signature code for hero members have 177 characters. When I copy and paste it onto the signature section on my profile, it shows "Max 4000; characters remaining: 3823". After clicking "change profile" at the bottom right, the final character (I believe it is a line break) is removed automatically and it becomes "Max 4000; characters remaining: 3824". The bot still thinks I am wearing the correct signature at this moment.
But then when I change my bitcoin address and keep my signature untouched (it now only has 176 characters) and click "change profile", the bot thinks I am wearing the wrong signature.