NextcloudPi manage/install applications

I installed nextcloudpi but I do not see the apps are under settings or maybe i’m looking in the wrong area. how do I enable/disable applications as well as install new ones? Curious if this is becuase I installed nextcloudpi vs the full nextcloud version.

Thanks in advance as this is all new to me.

Could be related to some problems in the infrastructure (should be solved soon):