After creating a game, 'Remove' listed in Play window where 'Accept' is usually seen

The title about covers my problem. In addition, players on a couple of accepted challenges have disappeared almost immediately after the game screen appeared. This may not be related to the topic, admittedly. I mention it here in case it provides useful information. I will appreciate any help/information on this issue. Thanks.

If it’s your challenge, it will show up as remove, so that you can remove your still-open challenges. I’m not sure what you’re trying to report here…