Alex, Firstly, Apologies for the delayed response.
Since you have posted the question on Azure App Service? Is your webapp hosted on an Azure VM or Azure WebApp or some other Azure service? Kindly provide more details about your scenario to assist you better.
Based on my understanding of your issue, it sounds like you're experiencing a 504 timeout error when trying to access your Azure-hosted endpoint from your desktop and laptop, but not from your mobile device or other devices.
It could be caused by a number of things, but it's possible that there's an issue with your local network or internet connection.
If you haven't done this already, you may try these to isolate the issue:
- Clear your browser cache and cookies on your desktop and laptop. Sometimes cached data can cause issues with loading websites.
- Try accessing your Azure-hosted endpoint using a different browser on your desktop and laptop. This can help determine if the issue is specific to one browser.
- Check if there are any firewall or antivirus settings on your desktop and laptop that might be blocking the connection to your Azure-hosted endpoint.
If the answer helped (pointed you in the right direction) > please click Accept Answer Or please share the requested/more info to help you better.