Ohio right to entry/notification ohio

[Jason Michel]

So i posted before about that to do to make sure i followed everything to legally enforce my rights. So quick back story. Found from family that drive by and keep on place for us since we live in FL and house in ohio..They noticed 2 things, cat house in window and cats in windows...which my policy and lease state no pets. Also has tenants mother living with them that not on lease.  See her alot early in morning in pajamas on porch...so assuming living there.  Also have issue where theres some damage to outside...screens torn out, cut a hole in garage to put a wood burning stove(also against lease) SO last week I sent them a notice via usps(not certified, priority with tracking) scheduling inpsection today at 10am(plenty of notice) also sent copy via email yesterday and text yesterday all before 24 hours. He replied back that I can't come in and if I tried he would stop me..(like physically) so I went to city PD and got a Civil standby and had them come to house..Changed the locks on front door and padlocked garage, the side door they used coat hanger so i couldnt open from outside.. I was going to get bolt cutter and get access. Talk to police and they say the notice needed to be certified and i couldn't access...that doesn't seem right for what my lawyer said.  I obviously don't want to get arrested, but i need access to house. Should i even bother or is the refusing me entry enough grounds.. After finding out about pets/occupant, i sent a notice back in january to quit and vacate. Jan 31 was deadline. I'm going back in couple weeks and want to know how to gain entry....hes claiming his disabled son is  afraid and threatened by me (eye roll) again, never said a thing to son and I live in florida and haven't been at house since i gave them the keys.. Oh and a kicker, every single window in house and garage has some type of cardboard or plastic blocking the window..it looks ridiculous but they obviously want to hide something.. Any one give me some advice?  I really need them gone