Here is a decent explanation of what actually has been going on.
https://www.politifact.com/article/2024/aug/02/what-to-know-about-claims-that-trump-rally-shooter/
It's extremely unlikely that there ever was any overseas accounts. It's been a month since all this stuff came out and the trail has gone dead. I suspect because it was much to do about nothing and Walz isn't going to invite more egg on his face by bringing it up again. The only thing that seems out of the ordinary is that Crooks had an encrypting app on his phone. And that's not all that out of the ordinary as such devices are commonplace now.