I need a WIX professional for members portal design.

I have an existing WIX website and domain and am looking for a members portal to be built in for exisiting clients to access a recipe data base and bonus content like blog articles etc. we are a nutrition and personal training business. I am looking for something visual, easy to use and easy to manage access etc.
I will provide all logos, content etc - I would also like to keep the exisiting look of the site so no site redesign is needed.

my current website is - https://www.sunnysidefitnessco.com