Default Admin Password not working.

I have been through this with 2 HexS routers and am ready to declare these as garbage. Brand new out of the box, I install the first one, login with the default admin password on the bottom label, perform firmware upgrade and then the default password does not work. Checked QuickStart guide and documentation, performed reset multiple times still the password is not accepted. Tried logging in via iOS app, web browser and Winbox with same behavior. Had a 2nd new device sent over and now can’t even log in with the default password on first boot to update firmware! Performing reset, and testing login also fails.Anyone else go through this? I really want to take advantage of this devices power but would be better off using my Comcast router at this point, at least I could see devices on my network.

Support ticket created and no response so far.

OS version: V.6.49.16