Cash ISA banks - BNY

I noticed that the banks that T212 uses to hold cash ISAs have increased by an additional 2 banks, Banco Bilbao BBVA [Spain] and Landesbank Baden-Württemberg [Germany], also noticed that the BNY which previously held quite a substantial %age has now been reduced, Is there trouble brewing with American Banks? I know that T212 says that it constantly reviews the banks where it holds our Cash ISA and that’s all goo, I’m just curious that’s all. Thanks

How would Trading 212 know?