Membership extension granting only 28 days, not 30

The past 2 or 3 months, my membership extension Bike Angels option has only been granting 28 days at 4x extensions instead of 30 days. The 4th extension in a month is supposed to grant 9 days instead of 7, but that has not been the case. I am not sure what exactly might have prompted this change on my end - maybe I disabled auto-renew on my membership, but my membership is still 'active'; it could also be that the last few months, I redeemed the weeks separately instead of all at once. This month, I redeemed 3 extensions at once (21 days) and then the 4th one later (supposed to be 9 days but was 7).

Has the policy changed yet again? The FAQ and webpages still reference the 30 day policy:

https://community.bikeangels.com/kb/basics/bike-angels-faq/38:

Weekly membership extensions are still available, and earning 80 points will now unlock a full calendar month (instead of just 4 weeks).

https://citibikenyc.com/bike-angels/rewards:

Membership extension (20 points): Extend your membership from your original renewal date. Redeem up to 4 weeks each month. When you redeem the fourth week, we’ll extend your membership for a full 30 days.

If not, how can I get this resolved and get my missing days?