Hi @m0rry88
Please make sure you have cleaned cache in your cache plugin and cleaned cache and cookies in your browser and reloaded the page with Data Table.
Otherwise, most likely there is a conflict with your other plugin or your theme. We hope you understand that we can’t test our products with all other plugins and themes that are available on the market, and we can’t control the other developers. Therefore bad code of other plugins or templates can provoke a lot of problems.
Please try to deactivate all your plugins one by one and check the issue. Thus you will find out which plugin causes the error. If it won’t help, try to switch temporarily to a standard WordPress theme. Afterwards let us know about the result. This will help our developers to solve your problem faster.