One last thing, please either give experts access to everything that we will need to complete a website set-up. If this cannot be done, then let the customers know that in order to complete the connection of your website to the internet and it may be necessary for our expert to require your Wix Login information as well as the login to the business that host your domain name. You will be advised accordingly if needed.
It is so uncomfortable for me to ask someone who I do not know and who does not know me, for their passwords. For warning would make it a lot easier.