Did you also move to HTTPS? It looks like your canonical tags are set to the https version of your site. Have you added that site to GWT?
There is something in your CSS/HTML file that is taking forever to load. I would look for bad JS. The page spins for about 45 seconds before it actually loads.
In GWT, go to Crawl > Sitemaps > and look at your submitted sitemap. Make sure it sees all of the pages. You should also be able to see if pages are being indexed. It looks like you have about 565,000 pages indexed for www.jmac.com. You still have 360,000 pages indexed for www.jmacsupply.com. So, I would infer that the old site is still being deindexed and until that is finalized you might be having issues with duplicate content. Two weeks is a little premature to freak out in my opinion. This can take 4-6 weeks to finalize. There is always a period of time after a migration where traffic kind of plummets. If after 4 weeks you are still having issues, I would try fetching some pages as Google and seeing what happens.
Google's mobile bot tends to crawl pages faster than the desktop bot. That would explain why your mobile page is ranking in engines for specific product searches. If I just Google the name of your company, your mobile site is a few pages deep.
Some things to check would be that your 301 redirects have been implemented accurately, make sure you have set the preferred domain in GWT, add both the www version and non www version of the site as well as the https and non https version of your site, and make sure that your canonical tags are set correctly. If the https is your preferred version, whenever someone types in jmac.com they should land on the https version, and that is not happening.