You need to get the 7 blade trailer light connector on your tow vehicle working, BEFORE you tow. I doubt that it is disabled. More likely, it needs to be completed.
1. Unless your tow vehicle came with a brake controller, you need to have one installed. It is illegal to tow in some situations without working brakes on the trailer. Your tow vehicle has specifications that set the trailer weight limits that may be lower than the law allows. Read the owner's manual. If you travel outside of GA, other states will have different laws. https://dps.georgia.gov/sites/dps.ge..._sheet_054.pdf
2. Many tow vehicles come from the factory missing the fuses for trailer lights. Check to see if some are missing. Or, call the dealer to ask about your specific vehicle.
3. If the trailer's umbilical cord has the round pins that will not fit the flat blade that is on your tow vehicle, you can purchase an adapter or replace the cord end with one that matches your tow vehicle. Note the function (not color) of each wire. The wires on older trailers are different from newer vehicles, so you really have to pay attention to get it right, when replacing cord ends.
4. The converter has nothing to do with towing, you do not need one to tow. You need a charged battery in the trailer for the emergency trailer brake to activate, in case the trailer accidently becomes separated from the tow vehicle. With the 7 blade connector on the tow vehicle, the trailer's battery is charged by the tow vehicle.
If you do not understand all of these things, get someone to help you that does!