If an IP address was banned for an hour, it wouldn't be anything to do with Composr.
The quick installer has been used over many years, without any kind of auto-banning by middleware/servers, so this seems like some quirk of your systems, such as incorrect intrusion pattern analysis or flood-banning.
The quick installer has been used over many years, without any kind of auto-banning by middleware/servers, so this seems like some quirk of your systems, such as incorrect intrusion pattern analysis or flood-banning.