When downloading the addon it's not formatted correctly or the original method shouldn't be used anymore because of the restriction from android 11 onwards and the bp/rp aren't supposed to be file type, they're supposed to be folder type.
So whatever formatting you're using is incorrect or else Bedrock Edition will not see this addon as a proper addon and will not import.
Please use the proper methods for us users to properly import the addon to Minecraft.
I have RS File Explorer and a app that bypass the android 11 restriction and every time I try to move the bp and the rp to their proper places the task fails due to how you formatted your addon during the downloading process for the consumer aka us users.
Don't use .zip for the folders! Use .cmcaddon instead.
I play on the mobile version of Minecraft: Bedrock Edition btw.