Cannot run Photoshop Elements 2021

[Jessica K.5C7E]

When I try to run Elements 2021 I get this error.  I have a valid license, the software has already been activated and my internet is working.  Does anyone know how to fix this?  Thanks

[MichelBParis]

One possible reason, see that old discussion:

https://community.adobe.com/t5/photoshop-elements/quot-your-computer-seems-to-be-offline-quot-when-t...

[Greg_S.]

. . .  and if Michel's link does not resolve the problem, try contacting Elements support. You can start a chat session by clicking on the blue Contact Us button under the Support menu at Adobe.com. Or you can contact Support by telephone using the numbers listed here: https://helpx.adobe.com/contact/phone.html.

[Phil Pickering]

Another possibility is if you are on a corporate network and your IT department has blocked access to the Adobe activation servers via their firewall settings.