GD Payment Manager V2.0.2 & WP Invoicing

Hello,

I would like to introduce payments onto my website and so I installed GD Payment Manager V2.0.2 & WP Invoicing to my staging site. When I did this, the search magnifying glass, updates notification, user notification, and user area disappeared from the top right hand side of my menu bar. It seems to be the WP invoicing plugin that is the problem.

When it is active the icons are there initially but then disappear. I have a lot of other plugins so I tried deactivating them and the problem still occurred so doesn’t seem to be a plugin conflict. The only one I couldn’t deactivate was the GD Core Plugin as this caused a fatal error for some reason (is that normal?) but I doubt it could be anything to do with the core plugin.

Your help on the above would be much appreciated. I will provide login details to my staging site in a private message.

Thank you.