Hi @Sajith Gopalakrishnan Hema
Please check your permission level settings. In my test, if the user has read-only permission, the "add app" option is missing.
In my test, this option was displayed incorrectly once or twice when the page jumped, but when I clicked "add app", it showed no permission.
Below is my read-only permission level setting:
Update:
If this user has the contribute and modify permission, the Add App option cannot be hidden. This is a by design phenomenon
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