What can I do to stop Owner from showing home without sufficient notice and with no consent ?

You have no lien rights. You would have to sue for breach of the lease which will likely cost more than any actual damages you have and take...

Yes if changing something in the original covenants there must be an amendment via a vote.

Can I have a shingle roof and put tiles on top of the shingles for insurance purposes?

I seriously doubt putting tiles over shingles will ever pass inspection for code. The problem is you waited for 10 months and should have consulted...

Is there a Florida Statute or law that states a person is to place rent in the court registry for a property they do not occupy?

I agree, al that matters is the allegations in the complaint in terms of depositing rent per the statute cited to argue ANYTHING except payment. ...

Who keeps the money on a claim with owner financing?

You would need an attorney to review all of your mortgage and other insurance paperwork. This should have ABSOLUTELY been a requirement for owner...

My gf and i moved in together a year ago. The mortgage is in my name but we have been splitting the bills the last year.

Probably as the contribution can be considered a form of rent.

Do i have to sign the rent assistance paperwork they recd from the county for a tenant behind in rent?

What does your lawyer say? There is no way to say to sign something no one can even read.

What document should a landlord's agent have to negotiate and sign a lease on a Cape Coral, Florida residential property?

None, there is no written permission an agent needs to represent a property owner; power or attorneys are common but not required by law. If you...

What can we do to get the extension for 3 months

You can't if landlord won't agree. You can move ASAP as your lease sounds like it is up, or have an eviction on your record forever.

Do I need to purchase Owners Title Insurance?

Why would you not want it? It is a small cost compared to thousands in legal fees later to fix even a small title issue later.