The converters that come with campers are usually garbage.
Do an online search for a Progressive Dynamics 70 amp converter, order the remote charge pendant, and you should be ok.
Strongly recommend you mount the new converter within 3-4 feet of the battery so it'll charge the battery faster due to lower voltage loss.
I'm on my 5th camper and have done this five times already. Worth every penny!
The 70 amp converter will give you room for growth if you decide to expand your battery capacity especially important if you decide to go solar!