Not installing properly

Hello. When click on New Campaign I get a screen where the CSS styling is absent and the toggle editor link doesn't work. I increased the maximum file size upload in my PHP settings to 256m but nothing changed.

Please view attached photo. JoomDonation 5.4.2 installed on Joomla 3.6.5.

The date picker doesn't appear either. Appears to be a fatal Javascript error.

And there is no Save button. I have deleted and reinstalled but the problem is still the same.

Sorry for the multiple replies.

Hi Paul,
Please submit ticket and send your site url with super admin account. I'll help you to check and solve the problems.
Thanks
Dam