Must use Auth0 Guardian. Need help. I am a first-time user, not a developer

Thank you for your kind response. Thank you for the video. That really does help.
I forgot to ask, the instructions from brokerage said I will receive a “Push Notification”. I have not figured out text messages yet. Still figuring out and setting up the smartphone (moto e). What is the difference between text message and a push notification? From your video it appears that the push notification comes within the Auth0 Guardian app I download from google. If a push notification is within the Auth0 Guardian app then that all I think I need to know about push notifications.
You offered to “I am happy to walk through an issues you have with it”. From your video I do not think I will need that. It seems simple from your video. I hope it is that way when I do it. If I do need that type of help what are you proposing? Can I call you?
Next question I forgot to ask. I watched Google authenticator video on youtube. Google authenticator has a time out feature that the code is changed. I do not think I can do that in time before the change. Does Auth0 Guardian have a time out feature? This is important. If Auth0 Guardian does have a time out then I need to be prepared ahead of time to act quickly. Thank you for your response. Bob.