3 days(already 5) without response from support

It's possible the case is languishing for one reason or another. If you hit initiate live chat it will requisition a new engineer or agent.

You can update your case to provide more information for the support agent. For example, you can reply to correspondences, start another live chat, add additional email recipients, and so on.

To update an existing support case :

2. 1. Sign in to the AWS Support Center Console. Under Open support cases, choose the Subject of the support case.
3. Choose Reply. In the Correspondence section, you can also make any of the following changes: • Provide information that the support agent requested • Upload file attachments • Change your preferred contact method (for example , select "Chat" method) • Add email addresses to receive case updates
4. Choose Submit.

Ressources : Updating, resolving, and reopening your case : https://docs.aws.amazon.com/awssupport/latest/user/monitoring-your-case.html#update-support-cases

Update - day 5 and still nothing.

Is this something common for AWS support to just ignore cases for so long?

Hello,

I'm so sorry to hear about this, it's not the experience we strive for. I can imagine your need to have this resolved, which is why I've reached out to our team handling your case and passed along what you've shared here for further review & visibility.

For your privacy, we're unable to discuss account or case details via this platform. Rest assured, our team handling your case has full visibility and will follow up with you as soon as possible. You can access your support case here: http://go.aws/support-center.

We appreciate your patience as we continue to work on this for you.

Best regards,

— Aimee K.