I have been fighting with this problem for days now…
Somehow I don´t see the comunity addons. When I try to add it does nothing and I see this in the log.
The only ADD ONS i see in my HA are the Oficial ones .
This is driving me crasy 
any help would be apreciated.
Regards
Francisco
20-07-20 16:54:56 INFO (MainThread) [supervisor.store.git] Update add-on https://github.com/home-assistant/hassio-addons repository
20-07-20 16:54:57 INFO (MainThread) [supervisor.store] Load add-ons from store: 22 all - 0 new - 0 remove
20-07-20 16:55:54 INFO (MainThread) [supervisor.store.git] Clone add-on https://github.com/hassio-addons repository
20-07-20 16:55:54 ERROR (MainThread) [supervisor.store.git] Can’t clone https://github.com/hassio-addons repository: Cmd(‘git’) failed due to: exit code(128)
cmdline: git clone --depth=1 --recursive --shallow-submodules -v https://github.com/hassio-addons /data/addons/git/701a5f4b
stderr: 'Cloning into ‘/data/addons/git/701a5f4b’…
remote: Not Found
fatal: repository ‘https://github.com/hassio-addons/’ not found
'.
20-07-20 16:55:54 ERROR (MainThread) [supervisor.store] Can’t load from repository https://github.com/hassio-addons
20-07-20 16:55:54 INFO (MainThread) [supervisor.store] Load add-ons from store: 22 all - 0 new - 0 remove