All notices, requests, approvals, and other communications required or permitted to be delivered under this Lease must be in writing and are effective on the Business Day received if delivered by telecopier or facsimile; or 3 days after being deposited in the United States mail, certified, return receipt requested, postage prepaid; or upon receipt if delivered personally or by any method other than by telecopier (with written confirmation) or mail, in each instance addressed to Landlord or Tenant, as the case may be, at the address specified in Section 1 of this Lease, or to any other address either party may designate by 10 days’ prior notice to the other party. Subject to the provisions of Section 27(b), if any act or omission by Landlord occurs that would give Tenant the right to damages from Landlord or the right to terminate this Lease due to constructive or actual eviction from all or part of the Premises or otherwise, Tenant may not sue for damages or exercise any right to terminate until (A) it gives notice of the act or omission to Landlord and Landlord’s first mortgagee, if any, and (B) a reasonable period of time for remedying the act or omission elapses following the giving of the notice, during which time Landlord, its agents, employees, and first mortgagee are entitled to enter the Premises and cure the act or omission.