About your reviews, you will only be able to read the general details until you get VIP membership, whether paid of the limited type. If you have reviews, ask admin to give you limited provider VIP and have them linked to your handle. To do that, use the 'contact us' button at the bottom of any discussion board page.
The previous poster said you should read the self help center and I heartily agree. The various rules about posting and ads are in there, along with much other information that should help you out.
If you do have a profile already (which means you do have at least one review), you can submit a problem report on it to change your phone number on the profile. You can also post on your local regional board that you have a new number. If you post an ad here, you can also mention that you have a new number in the ad.
Don't blame you for being uncomfortable with bp, you can advertise on EROS, or you can join any of the verification sites which is like having an ad on them.
If, after reading the self help center, you still have questions, come back here and ask them.
Swim