Your Walmart account can become disconnected from Sellbrite for a several reasons. Sometimes there can be a failure within Walmart's API, which will cause Walmart to become disconnected. If this is the case, reconnecting is easy.
Navigate to Settings > Sales Channel Integrations, then select Walmart to get to your Walmart Channel Settings. From here, simply click "Reconnect."
If this does not reconnect your Walmart account, check your Walmart permissions to confirm that you have granted Sellbrite full access to your account.
From your Walmart Seller Central, go to Settings > API Key Management.
On the next page, click the "API Key Management" button located toward to the top of the page.
Click on "Permissions" for Sellbrite and confirm that your permissions are set to "full."
If Sellbrite isn't displayed on this page, you will need to add Sellbrite as a solution provider. To do this, click "Add New Key for A Solution Provider." Once You have added Sellbrite as a solution provider, double check its permissions and confirm they are set to "full."
Navigate back to the Walmart Channel Settings page in Sellbrite, and paste your API keys in the Walmart Client ID field, and Walmart Client Secret field. Now click "Reconnect."
NOTE: Even after you have successfully reconnected your account, Walmart can take up to 5 days to acknowledge and accept the connection request from Sellbrite, but typically it will connect much sooner (as soon as a few minutes).