I just purchased a plan and playing around. Tried to install the hummingbird plugin in my wp site and i got the following error: " Installation of Hummingbird failed. Most likely reason for this are wrong folder permissions of your wp-contents folder. "
Tried to change the "wp-content" folder from 755 to 775 even to 777 but no changes. The error is still the same. The weird thing is that some other 3rd party's plugins are installed without problems and the wp smush pro also installed without problem.
What i have to do?