DRIVING ME CRAZY- HELP!

So yesterday I downloaded Wallapop as I have ToDoColeccion and had purchased something on there beforehand. I was absolutely fine in the web browser, favourited lots of shit for about an hour and as I messaged a seller it logged me out, told my my password was wrong and that I couldn’t log back in due to internet connection. I did open a dispute with them and they stated it was because I wasn’t in Italy, Portugal or Spain, why the hell is the app available for people to download in the UK then?

I then found out if you use a VPN it works but as soon as you come off of it, it just blocks the new account I made. I did manage to message the seller but I’m never able to find out their response as I get blocked or logged out before I can check. I literally only want to know if she will post it to the UK and doing such a simple task has turned into this monumental molehill, the website is glitchy as hell. Is there any way I can get around it? Is there any Spanish person here who could just send her a message and drop my email or something? It’s an absolute fuck around but I’d love the shirt for someone’s upcoming birthday.

Any help or guidance is appreciated!