OK, although all went fine at the signup, I did realize

OK, although all went fine at the signup, I did realize a hugh problem! That Hugh problem is that 2 of the most important plugins that stimulated me to come to wpmudev si the whmcs plugins, they are 2. and both wont work when I try to install. The attachment below is a screenshot with the error I get when i try to install this plugins. I haven't installed other plugins so far to see if they can be installed with the free trial version.