Top mods / Sinytra Connector
Not listed
Sinytra Connector doesn't list Minecraft 26.3 on Modrinth. The newest release it lists is 26.2, on NeoForge (beta files only).
Open Sinytra Connector on Modrinth
This is what the mod's author listed on Modrinth, not a test. A listing doesn't prove a mod runs on your setup, and a missing listing doesn't prove it fails. Versions must match exactly, and files published elsewhere, such as CurseForge, aren't counted.