Excuse me, I do not understand well (I do not speak English well), it tells me that I must reinstall my Joomla! to an earlier version ?.
How do you do that?
And if I understand well, I must download in technological update so that the plugin I bought works ?.
Should not you announce this before we buy the plugin?
In fact, should not you update the plugin to the current version of Joomla !?
Also, in the listed changes or modifications the plugin says that it is compatible with Joomla 3.8.
Excuse me if I did not understand what is happening. Thank you very much.