Can't buy pro from my main google account

I have tried to buy pro but it points to my other google account and I can’t change it to my main account which is the one I downloaded it from. Can you help?

Also you have roller skating but not inline skating, can you add it?

Please check inside Google Play app that you are logged into account that you want to make purchase from.

I will need to check if there is any difference in calories measurements between skating variations. Or is just a matter of “name” in history view?

I tried what you suggested and still it picked the other google account. I finally deleted the second google account off my phone and then I was able to pay via my primary account. Would still like the inline skating added.