I just used the feature only 3 times, I think, but the last time I used it some weeks ago, it had been updated so that you could set a time yourself to terminate it, or I think it would turn off all by itself even after 1 hour if you’d not reactivate it.
However, I’ve seen several posts about the feature not working correctly and sellers who had turned it off on their part, apparently were still showing as online to buyers and got penalised then for not replying.
The spacing mystifies me, especially when no space, one space and two spaces are used all within one text. I’d always thought that writers are people who at least used to read a lot before they became writers, how can you possibly miss the prevailing spacing conventions - even if you didn’t have any formal education and have an insurmountable dislike of grammar books, it should dawn on you at one point that there’s a space before a new sentence starts?
Oh well, it’s a helpful pointer at least for some buyers, I guess.