Hoping someone can narrow this problem's cause (a, WPress b, Theme, c, coding d. Browser, e. firewalls, settings etc) by LOOKING CLOSELY at screen captures here below and comparing that to what appears in same page/location/block on properly appearing site view (above and link to website below).
Wordpress person started to lean towards this not being WPress, but could be related to the theme (Monster WP Monstroid Theme) but that is not settled. Related it could be the rotating slider (website link below shows that working).
Site appearance is not right on some (all?) government PC computers but all other websites look fine on these same exact, gov PCs. The govt. computers block certain sites, blogs and social media but our site is none of those. The only browsers available : Microsoft Edge and Internet Explorer both show the site with the same exact poor appearance. The site is loading quickly but the home page rotating banner/panel is nowhere to be found and the drawdown menus are converted into some odd column structure with a gray background (see below). We have lowered various internet safety/browser settings to unrecommended levels and the problem persists.
Some type of issue when you combine our site with most govt computers. These PCs works fine with many sites. Subject PCs have Microsoft OS, Intel chips, Internet Explorer and MS Edge browsers (neither is showing site). Have Java Plug in SSV helper (Oracle) enabled.
Our site looks fine everywhere else tested so far including all mobile.
Not sure what causes this exact problem (see pictures). Note that the social links on bottom of home page have been "reddened" out by govt PC (not sure if that is a clue) .
Screen shots showing bad appearance of home page in ~ next 6 shots .
Here is link to site that is working fine on PCs except as detailed above on govt PCs.
The above screen shots are from one group of govt PCs. The next screen capture is from a completely different govt department. This dept's PCs are showing that the website ahs lost all its formatting or borders and relative sizes and positions of all jpgs, blocks have changed/switched sizes and positions.