Hi @Toneloc. Thanks for being part of GoDaddy Community! I haven't heard of anyone being able to do this. What I can say is the only way you'd be able to get it to work is if it can be added to a site using an iframe embed. You may want to check with Optinmonster's support to find out if this is possible. If not, then it likely won't work with GoCentral. Sorry
JesseW - GoDaddy | Community Manager | 24/7 support available at x.co/247support | Remember to choose a solution and give kudos.