v0 "Failed to start your plan" error when upgrading to Premium subscription

Hi everyone! v0 team, please help me - I want to upgrade from the Free plan to the Premium plan, but I can’t seem to do it.

Problem

I enter my Mastercard, but the payment doesn’t go through and I just get the message:

Error: Failed to start your plan.

Could you please advise me on what I should do?

Thanks for your patience while we looked into this.