Unable to Downgrade to Starter Plan from Pro

I have subscribe to Pro plan last month .But now requirement chnage .
I want to opt for Starter plan .

But I am not able to downgrade .After clicking downgrade , I am getting following warning/error message –

Subscription update failure: When updating an existing subscription, billing_cycle_anchor must be either unset, ‘now’, or ‘unchanged’

Error mesage

Please fix the issue and downgrade my plan before the new billing cycle .

Billing Cycle

@Koyeb

Hi @MD_on_behalf_of_Ripo

You are right! It’s a bug on our side that we are fixing in this moment. Please, retry in one hour.

Issue resolved @Leonardo_Barcaroli .

Thanks