Students login issues

Hi, sorry for posting again. This is a different topic.

Almost ALL of my students have had trouble logging into the course. When they get disconnected from the system I have to send them to the payment page (!!), and click a small option that says “I am a student” in order for them to enter their email and password, which after they do, they will appear as “logged in” on that same payment page, without any option to go into their dashboard. Then, they need to go into their email to find a link for any of the classes and click on it, and only then, they are inside the platform.
Is there any way that I can make it easier for them to get back it if they get logged off? And maybe to have a page that is only to log in, instead of sending them to the payment page?
Sorry if I’m overlooking something… Thanks!