Hi @maccg12
I have seen this issue before, and there are a few steps that helped:
1) Try using a different browser or a private/incognito tab and see if the issue persists.
2) Clear your cache in the current browser and reload Target.
3) Disable browser extensions and see if there is a conflict. Ad blockers, VPNs, or security plugins are especially troublesome for Target.
4) If you are using a VPN, try accessing outside of the VPN. The VPN may cause Target to show a network error.
5) Make sure you have the VEC helper extension: https://experienceleague.adobe.com/en/docs/target/using/experiences/vec/troubleshoot-composer/vec-he...
You can also check the status of Adobe cloud services here: https://experienceleague.adobe.com/en/docs/target/using/release-notes/system-status-updates
I hope that helps!
Matthew Ravlich | ACG Digital