Solve positiveSSL issue

I Need to solve my problem let me explain. I have a domain on namecheap pointed to a vps on vultr I tried to install let´s encrypt SSL and i notice that namecheap has already positiveSSL so need to remove one of those... maybe I should keep namecheap positiveSSL and remove let´s encrypt SSL. You will tell me wich is better, install or remove one of those and check that everything works ok