The review tab and the widgets are working fine when checked the plugin locally.
Also, when checked your site the the review tab is working fine. Similarly the widgets are not working is may be because of the incompatibility between your theme and our plugin.
So our suggestion to you is use travel log theme which works great with the plugin.
Also, there are lots of incompatibility issue that we have already resolved in your sites so instead of making it compatible steps by step it is better to use the theme which is fully compatible with the plugin which again will save the time and effort.
Hope this helps.