RV Camper

Nice Camp, no hookups I arrived at Brandy Creek , a national park service camp. I noticed a picnic table with instructions on how to pay on my iPhone. I was going through several steps when suddenly two park service cars sped up and blocked me and my RV in a parking space. Two well armed rangers surrounded me and questioned me interrupting my timed reservation input. I produced my senior pass and my Two IDs to match signatures as ordered. He said that an RV matching mine was seen camping here the past two nights without paying and I was the leading suspect in the camping caper. I said nope, not me, if fact I trying to pay now for tonight. He reminded me that he is an “officer of the law”. I should give him full attention. I said I want to complete my online payment so I don’t have to restart at square one. He said I was in violation by being here without paying first. How is it possible to read this payment instruction without first being here? Odd Welcome

RV coordinates on this app are incorrect

follow posted signage. pretty in spite of being parking lot camping. potable & nonpotable central water. dump. short drive to designated lots for lake access, but locals just pull over on the road and walk thru thr brush for lake access. lots of rock outcroppings and micro beaches access.