I tried with elevate.repo procedure and it seems it doesn’t include Icinga2 repositories, is it because it is only supported on Rhat 9? It’s production environment with around 9000 services and 500+ hosts, so no playground.
Give as much information as you can, e.g.
Icinga Web 2 version - 2.11.3
Used modules and their versions (System - About)
Web browser used - Chrome
Icinga 2 version used (icinga2 --version) - r2.14.3-1
PHP version used (php --version) - PHP 8.0.30
Server operating system and version - AlmaLinux release 8.10 (Cerulean Leopard)