I just purchased the Appointments+ plugin for my website

I just purchased the Appointments+ plugin for my website and I can't get it to install. It's coming up with an error: ""Warning: Invalid argument supplied for foreach() in /home/content/t/a/x/taxplus007l/html/wp-content/plugins/wpmudev-updates/template/popup-project-changelog.php on line 26""

Here's my purchase confirmation: ch_17U5EDDTvZeJR5ZpS7mc2JZN