Hi magsyardworks,
Thanks for reaching out to us here. Missing suppliers in QuickBooks Online can definitely impact your day, when tasks need to be performed in a timely fashion.
When this happens, we recommend clearing cache on your browser, if you haven't done so already. This will help with system performance and loading times. In addition, I suggest trying another browser such as Firefox, Edge, Google Chrome, Safari, or a private/incognito window, to see if you get the same result.
If you experience the same outcome, please contact us outside of Community. We'd be happy to look into your situation in more depth, and escalate it for further investigation if necessary.
Should you have other questions or concerns, feel free to reach back out. We would be happy to help!