Property Tax Settlement – Just bought house last year

I submitted my Property Tax protest and received the following:

Offer: Tax year 2022 market sales & equity comparables have been reviewed and indicates that a value change is warranted. The indicated market value is $313260. If this change is acceptable, please confirm your agreement to accept this value and settle the 2022 protest on this property as stated below

My property value last year was $240,000, I purchased the home in July of 2021 with the adjoining lot for $278,000. So the primary lot is worth less than that amount. It worked into my purchase of the home that I would pay the taxes on the property which ended up around $6500. This year will end up being over $9,000!?

I had the understanding that the max increase for property taxes for new home buyers is 10%? That seems to be the opposite of what some basic google searching is telling me now, there is no protection for new home buyers.

I can either accept or decline the offer. they originally had a property tax valuation of $317,000, so they knocked off a whole $4,000…..

Is there anything I can do at this point?