(1) You can seek wasila (intermediation) of the prophet (صلي الله عليه وسلم) in your dua as it may lead to acceptance.
(2) It is allowed to make journey for visiting the grave of Hazrat Ajmeri or graves of other pious men. You can do isal-e-sawab (conveying the rewards of good deeds) to them sitting in you home, but if you want to go, you can, but you should always keep yourself away totally from innovations and customs committed there, you should only visit the graves and return.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband