Canva pro Purchasing

I have a doubt, so about 3 months ago I purchased canva pro from Mohit Rathi (blogger/influencer) @ 999/- for a year, but not my access is revoked and they said we will give you new account bt cant give you guaranty that it will stay active as a pro after 3 months. After 3 months we will be not responsible for your loss. For a couple of days, I was checking on Facebook groups for canva pro accounts sellers but all those are selling at different prices with a different duration such as @ 999 - lifetime, @ 999 - yearly, @499 - life time , 599 - yearly.

Can someone explain to me are these genuine accounts providers? as they all have diffrent prices with different duration? how can I check authenticity bcz even if they provide me demo account it doesn't have billing info.

Please suggest me canva pro account