How to reset social sharing cache on Facebook
Steps to resolve update the Facebook social sharing cache:
Copy the fundraiser URL, in this case it's trellis.org/fundraiser name
Paste the URL into the field and click the debug button
It'll show you if there are errors (often it's an issue with the size or format of the image). I just click scrape again and it should update the cache
5. Delete your previous social media post and post the link again. Image will appear correct.