If other pools works fine then the issue is the Braiins pool.

Have you set up your all s17 in static mode?
If not try to set them into static mode and make sure to add Cloudflare or Google DNS.

If it's already set up in static mode but it's not hashing try to set them all to DHCP mode.

If it still does not work then you don't have other choice but to mine in other pools.