I went in originally noticed I wasn't getting any encounters of any rarity, literally no Pokemon were spawning. Left, and went back in assuming it was on my end. Again, same problem persisted when I re-entered and I spent some time running around trying to get any encounter, noticed another player not engaging in battle and asked them if they were encountering a similar problem in which they confirmed they was. I cant confirm if the other player was using repels but I wasn't.
I recorded the second entry of the zone,
the client was restarted and the only encounters i could initiate were through headbutting trees, there was also no surf encounters.
EDIT:
To add, it seemed as if everything but the exclusive area was as normal.
Thank you:)