I agree, what do people think is going to happen when he sneaks his way into the room and she recognises him as someone she has blocked and effectively banned ?
The context matters here, how would she recognise him?
He didn't meet her, I can only assume she never laid eyes on him, he was left waiting too long (in the hotel lobby I'd guess) due to her being busy with others in the queue, even though she had agreed to a specific time, so he left. Had he waited it out, no doubt she'd have eventually seen him.
He is blocked because she tied him back to this review based on what he said in his text comms to her (presumably that he was going to leave a negative review for time wasting). Not defending him, and I do not necessarily blame the SP for blocking him, but that was his only mistake that led to this.