There were no characters to select, only a wow logo with my battletag that could only like and report and making a ticket only resulted in the usual solutions which didnt work and them admitting this is a known issue from their side.
At least it didnt last 6 months like some ppl suggested.
It only reappeared today after making a lvl 20 allied race and rellogging in the site, though I cannot know if making that lvl20 was what fixed it or if it was fixed earlier and required a relog to work cuz relogging certainly didnt work at the start.
edit: you can see the logo in those 3 likes from non characters in that post.