Feature Request: Permanent Credit Upgrades for Lifetime Members

Hi Team,

I am a lifetime member and currently receive 10 credits per month. I highly prefer the lifetime model over monthly subscriptions.

I would love the ability to buy permanent monthly credit upgrades. For example, paying a one-time fee to increase my monthly limit from 10 to 20, or up to 50 songs per month, without signing up for a recurring monthly subscription.

Is this something you would consider adding? Thank you!