1. We don't fix the Play store, we're not Google, we're just a forum of Android phone users, trying to help each other.
2. Try accessing the Play store without using a VPN. If you can't, you have something set up incorrectly in your phone.
If you can, either Google has decided to not allow VPNs to access the Play store, or they've decided to block the one you were using (that usually happens due to abuse from users of that VPN - if the VPN won't close the accounts of the people guilty of the abuse, the site, Google or any other, has no alternative but to block the VPN).
But we can't figure out which one is the problem from here, you have to do that there. Then, if you still have questions, ask here and someone will answer you. (Not immediately, though, as you've noticed - it's about 5 hours since you posted and I just noticed your post now.)