My website is www.stratossolutions.com. Unfortunately, when building it, we didn't create a child theme and now when we update the theme, a lot of our customization and plugins don't work properly.
What we need is to have you create a child theme and put all of our customizations with the child theme so when we update our main theme, it doesn't change the way the site looks and still keeps the plugins functional.
Also, part of the project is to work on it so that our site doesn't go down during working hours in Eastern Standard Time (EST) in Canada between 8am to 6pm Mon-Fri. May be there is a way you can mirror the site and save all the work - perhaps download a copy of the site and work on your own and when it's all ready, upload to our site.
First step would be to check out our website, note all the plugins and see how they all work and how the end result should be and ask any questions you have. Then we can discuss the next steps.