(edited by Csele.1647)
Gem Store and Currency exchange wont load
I’ve had this problem which seems to be linked to how often you log in to the GW2 launch application. So for example if I log in one day and leave the game sitting at the character selection screen overnight, the BLTP won’t load unless I close the application completely and restart it.
From your troubleshooting steps it sounds like this shouldn’t be the problem, but I wanted to mention it for others who are reading this thread with similar issues.
Have you tried clearing your cache? Here is a link to some instructions for clearing the cache and other workarounds: https://forum-en.gw2archive.eu/forum/support/bugs/Cant-Access-Gem-Store-or-Black-Lion-Trading/first#post3787009