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I am running latest pi hole installed today on a fresh image of latest Raspbian lite on a brand new RPiZeroW. Only some devices have connected so far (the ones that I manually reset the wifi). My phone tried connecting over and over again for about 20 minutes before it finally worked.
I tried some sites at random and a majority (~65%) appear to be working.
Internet works, but without ads
Some sites work and ads are being blocked, other sites work but are slow or appear to work but stop loading half-way, other sites don’t work at all. Browser apps like lastpass don’t work, either.