Lease Payment Delay by ET Energy Partners

On March 17th of this year I executed a lease with ET Energy Partners in the Robert Steel Sy’s A-820 & 827. The lease had a clause that gave them 90 days from the date they received the lease for Title review. I am approaching the 90 day mark and feel as though I’m getting “the run around” by this Company. The mineral acres have been in my family for years and have been previously leased at least three different times. Any ideas as to why this may be taking so long? Never had this issue with leasing before. Could they be stalling and attempting to “flip the lease” to someone else. Any thoughts are appreciated.