Is it possible to migrate one Stack Exchange account to another?
1263
How can one link / merge / combine / associate two accounts / users? (Anonymous / unregistered / cookie, or Google / Facebook / registered)
32951
Authenticate to Stack Exchange using GitHub
52132
Why can't I use Stack Exchange if I'm under 13 years old, or if I'm under 16 years old and from the EU?
18092
How do I change the email address associated with my Stack Exchange OpenID?
94746
Switch from OpenID to a Stack Exchange login
28426
Remove account on a single Stack Exchange site
61655
Can I transfer my content to another user account?
32889
Migrate to *any* site?
54930
Where is the login with Stack Exchange option gone?
80828
This question may belong to , consider migrating
104514
Can I give a donation to Stack Exchange?
81286
Allow "Save And Copy Profile To All Stack Exchange Accounts" to exclude selected sites
135062
United Login for Stack Exchange sites which a Person has Signed Up
56900
How do users get started on new Stack Exchange sites?
81602
How to transfer installed apps from one account to another
126805
Don't we have single sign-on for all Stack Exchange sites?
72191
Switch Stack Overflow account from Google login to Stack Exchange login