Bug with OceanWP

Hi, the plug-in does not work correctly with OceanWP theme.

1. Sometimes amount is correct, sometimes not.
2. Loading bar displays randomly (I have impression): no progression, no color, sometimes it is visible, sometimes not depending on page.
3. Sometimes there is minibar under single products, sometimes not.

Could you kindly check or could I get a refund if correction is not possible ?

In actual state, I cannot use this plugin. Thank you !