Hi, guys!

I've been having problems with the market on my account for weeks. I can't access it to buy emotes, backgrounds, cards, anything... And today I also noticed that I can't access my inventory. Not on the Steam platform or through the browser.
What can I do to fix it? I have access to the authenticator on my phone, and everything is fine.

Error message is:
"Oops!
An error occurred while processing your request:

You've made too many concessions recently. Please wait and try your request again later."

I opened a ticket but received no help (twice) about having trouble accessing my inventory and the market; the problem persists.

Regarding what was said in the last support, I don't use a VPN for anything. The last time I used one was months ago to try to play BlazBlue with a friend. The matches were crashing on Steam and we thought it was the server. So we tried downloading Hamachi to play through Steam, but it didn't work. We tried playing the next day, and it was working through Steam. Probably our internet connection was bad, one of ours was, so we uninstalled Hamachi and went back to playing normally on Steam. And that was the last time I used a VPN.

Regarding browser extensions, I actually had the SteamDB one active to view promotions, reviews, and various other things, but since the last time I contacted you, I deactivated it, and it's been disabled. It's been two days and I still can't access the marketplace or my inventory. I'd like alternatives so I can access them again, as I really like stickers and want to buy more. I could even make purchases from the DST community.

Anyway, I'm waiting for your answers and ideas because I really don't know what to do.

Thank you!