Damn, I'm really stupid... I changed something in the message and forgot to sign again...
Here we go again, take 2:
-----BEGIN BITCOIN SIGNED MESSAGE-----
Username: sirclaudio
Loan Amount: 6BTC
Purpose: Pay legal fees to unlock assets
Collateral: None
Repayment date: 01 JULY 2020
Repayment Amount: 8.5BTC
Funding Address: 1N5jmSfz5Yt5ayhLVqA1XMWWhjQKfQTiaS
-----BEGIN SIGNATURE-----
II+zBy/85dzhE/CiOa7VzXS4nup1arXdz1aGTRFNS3SpXF4L1lJcfFMsTlWrAnsIi5wK2QZC/mV8UcSDiH6jYHw=
-----END BITCOIN SIGNED MESSAGE-----
Regarding the interests, ok, I reduced a little bit.
And I already put the address in the staked thread, that was the first post I made, it was one of of requirements.