How Long After a Mortgage Payment is Due Can the Lender Claim it Was Not Paid

[Nanima]

My question involves a mortgage in the state of: florida
I invested in a limited partnership involving land. Made payments towards the mortgage. 5 years after the payment date, the accounting firm informed me that I was missing two payments. When pressed, after another two years the firm told me of the missing payments dates. This is seven years after the fact and banks do not have the cancelled check information. What recourse do I have? I do not have a cancelled check and neither does the bank.

[Disagreeable]

Pay the money again.

[Mr. Knowitall]

The limited partnership did not keep financial records? Are you a general partner?

[Nanima]

No, I am a limited partner. The General Partner has been no help. The accounting firm is levying interest and penalty on the missing mortgage payments. The accounting records of the limited partnership for that time period are a mess