I changed info in my link, but it didn't update when sharing on Facebook or Twitter

Keep in mind that once you share an ffm.to URL on socials like Facebook and Twitter, they will cache the original images and meta-data, so even if you change them, it could take some time for Facebook or Twitter to register.

Facebook offers a solution to re-scrape new URLs so you can re-share with the new meta-data, however.

For Facebook, you can go here: https://developers.facebook.com/tools/debug/ and then press "Debug" -> "Scrape Again"

For Twitter, you can learn more about their process here: https://developer.twitter.com/en/docs/tweets/optimize-with-cards/guides/troubleshooting-cards and validate your Twitter Cards here: https://cards-dev.twitter.com/validator

What else can I do?

In addition to re-scraping your link, you can also take one of the below actions and Facebook / Twitter will scan your link again when you share

The below actions will actually cause Facebook and Twitter to treat your link as new URLs.

1. Use a different Channel Link
2. Use an !Activity link
3. Change your Short Code to a new one (this will cause the old one to stop working)
4. Change your sub-domain (this will cause the old one to stop working)