Moved to Suggestions - Plugins
Please be mindful to follow our forum category guidelines. Additionally, it would be helpful if you provide a download link to your suggested plugin.
No, upgrading to MH Unlimited will not allow you to do any of those things, take a look at this image to see what each plan does for your server/panel:
What error does it show when you try?
Plus I've gone ahead and moved this to help make sure to read our category usage guidelines to avoid this in the future.