Question about draw offer

Hi, have a question about draw offers in daily games.

I offered an opponent a draw in a daily game, I was playing as black. After doing so I wished I hadn't but I was relieved when he made a move instead as after looking at the game a bit more I thought I was clearly better.

After he moved, I also moved again and put him in check. At that point the game ended and the site informed me that he had accepted the draw.

Sorry but how the hell has this happened? He declined the draw by moving after I offered it, we played on and it turns out I was -17.5 according to the engine.

Why was my opponent able to both move declining the draw, then able accept it after they blunder and are clearly lost?

Thanks

I mean we can't know every thing 

This site is buggy as hell. And it's getting worse.

I guess support don't make a habit of actually replying to members in the help section.

A draw offer stands until after your next move,

So if you offer a draw while it's their turn they can play a move and still accept the draw after your response. That's why you should always offer draws before moving.

If, however, it was your turn when you offered the draw then we have a bug..

How is my opponent notified of the draw offer when my home screen shows it is still my move after I offered the draw?

https://www.chess.com/forum/view/help-support/question-about-draw-offer?newCommentCount=1&page=1#:~:text=GigaChadMagnoose,it%20out%20sherlock

Ok smartass. Go back to your hole.

maybe and you are a moron. At least I can change my emotion. You cannot change how stupid you are.

He does kind of make a point there tbh. After 11+ years playing you really should have gotten better than just 1000. 

that must have hurt

doesnt change the fact that its true

If you've made a move and offered a draw, then it shouldn't show you on the move. If it does, your client is displaying it incorrectly.