This add-on needs to be signed with the same key as Termux, just like it was done when adding e.g. the Termux:Task add-on in https://gitlab.com/fdroid/fdroiddata/merge_requests/1910.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This add-on needs to be signed with the same key as Termux, just like it was done when adding e.g. the Termux:Task add-on in https://gitlab.com/fdroid/fdroiddata/merge_requests/1910.