What to check first
Open the official Roblox experience first and confirm that every player joined the same game before treating a missing friend as a matchmaking issue. Roblox join permissions and server availability can change independently of the game.
A practical round check
Once together, agree on a small practice goal: let one player test routes as a Runner while another tests an approach as a Tagger. Swap roles when the live round allows it, rather than assuming a custom-rule setting exists.
Keep the advice current
A useful friendly round produces an observation you can test again, such as where a route loses sight lines or when an ability changes distance.
This English guide reflects the currently published reference material. Check the live Roblox experience for rules, item text, and values that may change.