Problem with buying premium vehicles

I started out playing on xbox and then about a year ago, i upgraded to a PC. I tried switching my account from being an xbox account to a PC account but they stopped doing that about a month before i got my PC. I was wanting to buy some of the premium vehicles but it won’t let me anymore. It doesn’t even show the premium AV-8B NA or the new F/A-18 in the tech tree. The only way i can see either one is when you’re looking at the background vehicles in the hanger. So my question is, why can’t i buy premiums anymore? What can I do to fix it?

Hello @S23_Grey_Fox,

Please contact Gaijin support regarding questions or issues related to your account or purchases:
https://support.gaijin.net/hc/en-us