Need Advice on a Lease Renewal Dispute

A friend of mine is facing a disagreement with their landlord about renewing a lease for a small commercial property. They received different information about the proposed renewal terms and aren’t sure whether the changes are reasonable or how to respond. They’ve tried discussing it directly with the landlord, but the conversation hasn’t gone much further. Has anyone here dealt with a Lease Renewal Dispute in Dubai? I’d appreciate hearing about your experience, especially what documents you kept, how you handled communication, and whether you were able to resolve the matter without formal proceedings.