If Instagram links aren't working, update the app and clear its cache first, which fixes most link failures.
Why this matters: a couple of these are user-side and a couple are app-side.
"Links not working" describes at least three different failures, and they don't share a fix.
If your link is tappable but lands on a white screen or an error, the culprit is usually Instagram's in-app browser rather than the link.
Instagram has loosened up over the years, but placement still matters.
Read the complete breakdown, fixes and what happens next.