Support Android 9?
OpenEUICC will NOT support any version below Android 11. EasyEUICC is being lowered to SDK 28 to accommodate for the needs of upcoming removable eUICC products.
OpenEUICC under Andoid 14
If by "the openeuicc module" you mean the Magisk module that has been floating around, that module contains a version of OpenEUICC from over a year ago. I can only say that the current version of…
Support Android 9?
minSDK has been lowered to 28 (Android 9) in the latest tagged release (unpriv-alpha02). Please test it out.