I did notice that the requirements listed on the "Providers Only" board are a little fuzzy: "The minimum criteria to be considered for admission to the PO Board is three (3) reviews. TER may consider additional information based on your history before granting access as this is an unmoderated board. ..."
In contrast, the requirements listed on the "Reviewers Only" board are at least more clear and quantitative on the surface: "If you have written at least 10 or more approved reviews and would like to be part of this board, please contact us with your TER username. ..."
My semi-educated guess is that they want to see a longer posting history from you and/or more posts before giving you access to the Providers Only board. For clients, this is easy to gauge quantitatively. If we're on the "My TER" tab, we can hover over the sub-category of "More" and choose "My Board Posts." Once there, you can look at the bottom and see the total number of your board posts. If you go to the last page of your board posts, you can see the first date that you posted. Hopefully you can do something similar in a provider account. Now as far as a qualitative judgment, I have no idea how they would assess a candidate. From the fuzzy criteria listed by TER, it sounds like they retain some discretion to grant access to that board. So you may be at the mercy of an unknown human being's assessment of whether or not you have a long enough history of quality posting to get in.
So your best bet may just be to be patient, keep posting quality posts, and check back later.
Hopefully a vet provider or someone similar can shed more light on this. I would take what I and other clients/reviewers say with a huge heap of salt, because we probably don't know what we're talking about.
GOOD LUCK!!!!
-- Modified on 9/3/2016 7:41:28 AM