from https://www.macu.com/lp/misc/reduced-minimum-balance
Membership Account Minimum Lowered to $1
On May 1, 2021, Mountain America decreased the minimum balance requirement on primary savings, youth savings and teen savings accounts to $1 (down from $5).
No action is required by you. The change was applied automatically, and your available balance was increased to reflect the adjustment. Please note that minimum balances for other accounts are not affected.