I already found a way to get rid of this annoying widget on the main page, which spams you with "supposed challenges", but actually tricks YOU to send Daily Game invitations, which is not obvious and one can mistake, which is the real game invitation and which is trying to have you send an invitation, as they are both in the same space.
But let's say that I already got tricked and invited some players that I don't want to play. How do I cancel the challenges?
I accessed my sent Daily invitations in two different ways and none allows me to cancel them. Is it really impossible?
Should I just wait for the game to start and then just ignore it / abort it / resign?
If the other member didn't already decline the challenge they should show under Outgoing Challenges in Play.

I already found a way to get rid of this annoying widget on the main page, which spams you with "supposed challenges", but actually tricks YOU to send Daily Game invitations, which is not obvious and one can mistake, which is the real game invitation and which is trying to have you send an invitation, as they are both in the same space.
But let's say that I already got tricked and invited some players that I don't want to play. How do I cancel the challenges?
I accessed my sent Daily invitations in two different ways and none allows me to cancel them. Is it really impossible?
Should I just wait for the game to start and then just ignore it / abort it / resign?