UK user — Asus router (common for UK broadband users who have replaced the ISP-supplied router): go to 192.168.1.1 → LAN → DHCP Server tab → DNS Server 1: 1.1.1.1, DNS Server 2: 1.0.0.1. Save. Asus routers apply this immediately without restart.
Ireland — ask your provider for the M3U URL specifically. It usually looks like: http://[server]:[port]/get.php?username=[user]&password=[pass]&type=m3u_plus — your provider will give you this formatted link. Enter this on the siptv.eu panel and it will load your channels.