By "gone" do you mean "the rest of the screen isn't drawn" (including the right-hand sidebar)? Or do you mean that everything before *and after* those modules shows up fine, just that those specific modules are missing?
If it's because "the rest of the page didn't complete being drawn" (which I'm assuming is the case), then the PHP errors causing it to abort are logged in your /logs/ folder. Ref: http://www.zen-cart.com/content.php?124-blank-page
Tell us what the errors are, and we can help further.
I suspect your "Net 1" module has a PHP error incompatible with PHP7 and is aborting everything. Details in the /logs/ folder.
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