Trade search with Seller account doesnt work for a specific name

Hello, for my own account name it constantly throws the invalid account name error, I've tried Márkusz#4682 M%C3%A1rkusz#4682 Márkusz-4682 M%C3%A1rkusz%234682 none of them worked

Yeah that's really annoying. I had a list of favorite sellers and I've checked their accounts on a regular basis if they have added something new. This list has now become useless. Even if I would find their accounts incl. the ID again, you simply can't search for them anymore, I've tested multiple variants it always says invalid account. So the seller account search has become useless.

P.S.: It's a bug, it would be a feature, but finally add all available currencies to the buyout price drop down. E.g. if someone has set the price to a greater eldritch ember, you can't search for it.