Is the Maybank2u connectivity down for anyone else?

Thanks for letting us know about the error. I'll share some information, about why this is happening, Ganvictor.

I understand how you want QuickBooks the way it was before. There's an ongoing issue about getting the 106 errors and being unable to connect to Maybank. Our engineers  are working to get this fixed as soon as possible 

As a workaround, you can download transactions from your bank, and then manually upload them into QuickBooks Online (QBO).

In the meantime, I suggest reaching out to our support team so you'll be included on the list of the affected users. This way, you'll receive an update once the issue is fixed.  

Additionally, QuickBooks supposedly downloads the latest transactions automatically. Learn what it looks for and how it tries to match with those transactions you entered in QBO. I've added this article for detailed steps: Categorise And Match Online Bank Transactions In QuickBooks Online.

You can always reply to a comment below if you need help when connecting your bank. As always, we're here to assist you further.