I have created root site in SharePoint Online, weird problem I started facing is being a site administrator I was not able to customize the page/ upload the any page or master page.
As in image below, for some reason I am set as Deny to "Add and Customize Pages".
The problem is related to 'Scripting Capabilities' being turned off by default for the root site collection in Office 365.
I found some article on community:
It mentions that turning on scripting through the Sharepoint Admin Settings and wait around 24 hours. However, this did not work for me. still the issue was there.
Following lines of script did a trick.
Connect-SPOService -Url https://<yoursitename>-admin.sharepoint.com -credential <admincredentials>
Set-SPOsite https://<your root site url> -DenyAddAndCustomizePages 0
And it immediately started working!