It’s doing it again. I sign in. Start game. Webpage crashes.
I keep getting banned for sandbagging or aborting games

Odd. Does it only happen for games you start against humans, or does it crash when you try and play a bot too? If it also crashes against the bots, you could try a test challenge first, and see if it works before looking for a human game. It might also provide some more information for them to use in trying to work out what is going on?
This literally just happened again. I send in just now using an iPad. Select new game. It loads the webpage like I am about to either move or the human opponent moves. Then, the webpage crashes, and immediately thereafter I get the pop up message that the game was aborted. I NEVER aborted the game. So, I try to start a game again. Same thing happened. Webpage crash. Them pop up box showing that I aborted game. Over and over and over. Until I get banned. Then, go through the entire process to get reinstated and warned not to abort games. Ugh!

This literally just happened again. I send in just now using an iPad. Select new game. It loads the webpage like I am about to either move or the human opponent moves. Then, the webpage crashes, and immediately thereafter I get the pop up message that the game was aborted. I NEVER aborted the game. So, I try to start a game again. Same thing happened. Webpage crash. Them pop up box showing that I aborted game. Over and over and over. Until I get banned. Then, go through the entire process to get reinstated and warned not to abort games. Ugh!
Have you tried a different browser?
It did it again today. Log in. Start game. Webpage crashes, and chess.com shows page indicating that I aborted game. No, I didn’t.
I just logged in and the chess.com app did it again. Started a game and I can’t move. Then, seconds later it says that I failed to move. Game over. Booted. Somehow, the server is just not registering that I logged in when I hit play. A developer needs to look into this. This last episode happened on an Apple iOS device.
So far, its ok for me. But the other guys should try.