Phone [Q] Paid and many other apps missing from play store

Okay..I have a very weird problem,Whenever I connect to my wifi all the paid apps on the play store disappear along with a few free ones too..and sometimes they just come up as "these are not available in your country" but when I connect to my mobile data (and reset google play) they come back up again..No problem!..I believe its a fault with the router or something but am not sure.Anyone else facing similar issues?