I need a professional WIX developer - please

Good Evening (EST), I'm hoping that what I'm about to request, you're able to accomplish. I have a site that I've already done, designed and wrapped up. However, my client is requesting me to create a Custom "Register" page that MUST be filled out by users wanting to log onto the site. The "registry" MUST be mandatory and it MUST require that the user wait for approval from the client before actually getting onto the site. Now... I've already done this request with the standard WIX "Login" page, which is generic BUT does the job. However, the client is looking for a "CUSTOM" Login page that has their logo and company name, but still requires the new user to Register with Email and Password credentials, so that the client can approve or deny users at will. I also tried a custom page that was designed with their logo, which looked nice but then it automatically STILL goes to the site, which is NOT what the client wants. Can you help with this, please? Again, the site is completely done, designed and finished but needs this last piece of function to happen. Looking forward to hearing from you! Thanks in advance, Joseph