the technical issue i face is the code in your machine... it's pre-php5, and the server here can't handle it- it uses php7.. there are too many commands for your code to work due to sunset/depreciation between the versions.
if you could email me your engine (code), I will have it redrafted by a coder to update the source to php7.1 which will make it a LOT faster and cleaner (and more secure).
i don't 'think' the database matters- so long as it's SQL, the sql engine itself will make the under the hood changes to make it work with php7 all by itself.
Apologies Sir- I've been incredibly busy and simply don't have time to do anything- but i will make time for this as it's past due. i've been fighting a rogue javascript in the site here for about a week, as a for instance. zero sleep thursday night and little over three hours the prior three days... i recharged last night, though, and after the sun hides i can focus on the site.
first things first, though- i've got to farm that code of yours out for update. i'll have it done by a professional. i'm about tired of attempting it myself and then chasing rogue code without sleep.