Ring Protection Plus plan is no longer linked to my Ring Video Doorbell 3, how do I fix this?

I already have a Ring Protection Plus plan but it is not linking to my Ring Video Doorbell 3, it did before but now it does not, how do I fix this? Without being linked I cannot view anything in history, it tells me to choose the plan that's right for you. I have the Ring App installed on my Pixel 4a Android cell phone.