Installation on red hat Rocky linux fail

I want to install pg_auto_failover on rocky linux 8.5 .
But when I key in the following install command:

(1) curl https://install.citusdata.com/community/rpm.sh | sudo bash
the console shows the error message:
Detected operating system as rocky/8. Unfortunately, your operating system distribution and version are not supported by this script.

(2) sudo yum install -y pg-auto-failover10_11
the console shows the error message:
No match for argument: pg-auto-failover10_11
Error: Unable to find a match: pg-auto-failover10_11

I wonder if there is any possible way to install pg_auto_failover on Rocky linux 8.5 or above.

THANKS!!!