If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
Chess.com Supporter Achievement not working

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
He has been on membership for three years martin

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
My membership wasn't gifted and I'm not on the free trial .-.

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
My membership wasn't gifted and I'm not on the free trial .-.
You haven't been successfully charged yet if you don't have the achievement.

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
My membership wasn't gifted and I'm not on the free trial .-.
You haven't been successfully charged yet if you don't have the achievement.
I've had the membership for 3 years tho
How did I not get charged

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
My membership wasn't gifted and I'm not on the free trial .-.
You haven't been successfully charged yet if you don't have the achievement.
I've had the membership for 3 years tho
How did I not get charged
Your original membership started in 2020. But it looks like someone else purchased your membership; your membership wasn't purchased through normal means so never would have triggered the achievement.

If you're on a trial or have a gift it won't unlock. It only unlocks when you're successfully charged for the subscription.
My membership wasn't gifted and I'm not on the free trial .-.
You haven't been successfully charged yet if you don't have the achievement.
I've had the membership for 3 years tho
How did I not get charged
Your original membership started in 2020. But it looks like someone else purchased your membership; your membership wasn't purchased through normal means so never would have triggered the achievement.
Ah I see
So I've had a diamond membership for a little more than 3 years now, and I still don't have the achievement :/
I'm not sure if this is a Beta thing, or if this achievement is just bugged in general.