No need to try other version of the plugin, you only need this:
View attachment 6448
Make sure you have deactivated and removed the old version. If it still don't work, get in touch with your hosting service support and check if ionCube loader for PHP7.2 is activated, although you should see error related to ionCube loader. You can also check it by entering this URL in your browser:
https://your domain.com/info.php. You should see if it is activated in the bottom of the first part like this:
View attachment 6450
I am sure something is not right in your setup that is why you are having this problem. I am also sure this is not a problem of the plugin.