To update the account name click on your initials in the top-right corner of the app, select Manage account and go to Payment & Billing Details. Here you can update the "Company name" to save the changes.
If you're already logged in you can also click here to find the setting.
The company name is not visible for those viewing your publications.
If you wish to change the name of the group containing your
publications, check out Changing the group name in the URLs