Thanks for joining this thread, @Batman69.

You'll have to contact your bank website to check why the transactions are not the same when downloading in QuickBooks Online. QuickBooks is just a receiver and depends on the data from your bank.

To fix this, after you add or match, go to the matched transaction and edit the description from there. For more details please read out this article:Add and match downloaded bank transactions [Video].

I'm adding our Help articles it provides tips on how to manage your account in QuickBooks.

I'll be right here if you need any other help. Take care.