We have gotten advice from lawyers for years without paying a penny for their service. No we are not CHEAP!

We ask to pay for the lawyer's service, but for the advice we have been given, we have never been charged. I would guess we have done this with close to a half dozen different lawyers. We always ask for a bill but never get one. Granted we are asking pretty simple questions but we expected a bill for their time.....
Point being, talk to a lawyer to find out what you could/should do about the situation before acting. it likely will cost you nothing or very little.
DO resolve this problem ASAP.
When we bought our land we owned another three lots for about five minutes before selling to Person A. Years later Person A sold to Person B and Person C.
We knew A did not know the locations of the property line because A's dufus spouse took down the survey flagging.

My big concern with this was that their septic filed ran 10 feet parallel to our land. I knew Dufus had no clue as to the layout of the lot so I paid for a survey of the common line to prevent THEIR septic field being placed on OUR land.
Dufus pulled down the flagging AGAIN.
The survey I for which I paid also inserted a pipe between the corners....
Person B was putting up a fence on their property. I could tell they did not know the location of the property line. Maybe it is just me but if I was putting up a very expensive fence I would KNOW the location of the line....
Thankfully the pin between the corners easily showed the fence was on MY land.
Fast forward a few years and Person A did not tell Person B or Person C that there were covenants on the land.....
<sigh>
Later,
Dan