Signing into Zoom on Android Zoom App

Hello

Not sure if posting in the right area. If it needs to move please do.

I have been on and off zoom user for about 2 years as the need shows up. But.... up till now my PC or laptop has gotten me through. Now there are some meetings I want to attend and I am not at home or work. I just loaded the app on my AO2s android. It states it is working but when I try to sign in with the correct password, after about a minute I get failed to connect with no error code that I see?

How do I go about getting signed in prior to tomorrows meeting if I am not at home?

Thanks for your help.