Profile social links claim Instagram and TikTok accounts are invalid

Issue Summary
The social links section on the Profile settings doesn’t recognize undercores on TikTok and Instagram usernames.
Threads seems to work as expected, as shown in the screenshot.
I know for certain those are valid usernames.
I’ve tried removing the underscores and the error message vanished.
When “save” is clicked, the Instagram field shows a link, but with the underscore removed from the URL (_mikannn becomes mikannn). The TikTok field, as far as I’ve tested, does not save any content at all if it contains an underscore.
I’m setting up a Ghost profile on a Chrome web browser on Windows 11.

I had a similar issue with entering LinkedIn company name in the staff social links. Still unresolved.

Looks like Ghost’s validator is choking on underscores, so I’ve worked around it by adding the correct links in a theme footer instead of the profile fields. Not ideal, but it keeps the links functional till the devs patch it. I’ve run into similar hiccups while managing stuff like https://capitalmediahub.com/rent-a-tiktok-agency-ad-account/ , so I’d stash the real handles in code for now and skip the UI fields.

Overall, this is very useful feedback that will help the developers fix the bug. In the meantime, to ensure proper saving, you can temporarily use the versions without underscores, as you did.

Fortunately, there are services and tools that can help you quickly identify such ineffective accounts and adjust your follower list to target only your real audience. If you're interested in how to do this effectively, helpful instructions and a step-by-step guide can be found at https://techtablets.com/forum/topic/how-to-export-a-list-of-followers-on-instagram-2/ . These tools will help you export your current follower list and delete non-existent or invalid accounts.