I have been using facebook for past several years.
I also had a few businesses for which I used fb to promote. However they banned by ad accounts without proper justification and also they didn’t mention any specific reasons as to why.
As a result of this I had to close my online business which would have run well. The support that I received from the fb support team was pathetic . They did not respond and neither did not clarify the reasons as to why this was done.
However fb is still great for running as its one of the cheapest platforms out there to run ads.
Hope they improve in future.