Loop Subscriptions App

I've been with Loop since January 2024, and run my business on their app. Loop gets 3 out 5 stars because (1) the feature set for businesses who use 'anchor day' functionality is limited, and development in this area is appears to have stagnated, and (2) there are frustrating gaps in the capability afforded by the API. For example, using the Admin API, it's possible to (a) apply to a subscription contract a line item discount, but not a shipping discount, or (b) change the anchor day in a subscription contract, but not the associated charge offset.