I also not sure I understand this screenshot [mostly because I am not performing a self-exclusion there so I have no idea what or when will this message appear], but is this message come after your failed self exclusion or this is the message about your first failed self exclusion?
That's surely an error message that pops up after clicking on an expired self-exclusion link. And I think he saw it after his initial 24-hour exclusion.
What I believe happened.
1. OP requested self-exclusion.
2. He got his account frozen for 24 hours.
3. Once the initial ban ended, he gambled again.
4. He then went back to request an extension and self-exclude again. It didn't work for one or two reasons. 1) The link expired (as seen in one of the screenshots, the links don't last forever). 2) He gambled after his initial 24-hour exclusion, signaling he doesn't want a new self-exclusion.