If an individual violates the terms of the easement by not paying the required dues and the easement is appurtenant to the land by deed what can be done legally?
You need to seek the advice of a real estate attorney, perhaps
the one who represented you at the purchase. She/he can review the
obligations in the easement agreement and assist you in sending a
legal notice to the other party. They will be informed of the
amount owed, that they have breached the binding agreement and the
legal sanctions they will be subject to if they don't pay the
arrears and keep current in the future. Perhaps they can be held
responsible for your legal costs. That factor is often an attention
getter. If they don't respond within the allotted time period then
the attorney can advise you on how to proceed.