Hi there. It's normal to see fluctuations in the view count as our system performs regular checks to remove spam. Also, different pages across YT (such as homepage, watch pages, Analytics) are updated at different intervals & the total views for the same video may vary.
Once you meet the eligibility threshold for the Community tab, it may take upto 1 week to get the feature enabled. Please note: If you have more than one Community Guidelines Strike on your channel then you won’t be able to use the feature. Hope this info clarifies.