Nighthawk App and EX7700 Extender Login Issues?

I have a R7000P Router and a EX7700 Extender. I use the Nighthawk app for setup.

Things were working fine until I had to reset everything and start from scratch. Ever since then, I am unable to log into my extender via the Nighthawk app. I have no issue logging in on my laptop, and I make sure I type in my password and username exactly on the app vs the computer. And no matter what, the app says my password is incorrect.

Doesn't matter how many times I change my password either, same error still happens. Is there any fix to this, or do I need to try setting it up again? Setup was already a huge headache and I am afraid to try it again, lest it not work at all this time.