The error you are asking for is actually what is shown there. The software cannot connect to that pop3 address. Its something you would need to take up with your email host unfortunately
You would need to check the connectivity between yourself and indexnow to determine where the timeout there is. As this is an issue on the connectivity side of things, there is nothing we can do from a software point of view that would prevent this
This has now been patched. Please visit support within your admin CP and apply the patch that is showing. If you are not seeing it yet, give it a few minutes
There has been a patch pushed out for this for you. You can see patches by visiting your support area in the admin CP. If you are not seeing it just yet, give it a few minutes and it will show up
A patch has now been release for this and is currently being pushed out. Please go to support in your admin CP to see this. If you do not see the update, wait a few minutes and check again