Is it possible to change the instance url after installation of the mastodon?
no, its create fedration issues other instance will see it as new instance
here is the discussion
Inditoot, A General purpose instance. I do my best to keep it fast,secure and alive.You can Follow friends and discover new ones. Publish anything you want: e.g. links, pictures, text, video. anything you want as long as you follow our code of conduct!