When Gakuran will not launch cleanly, the useful answer is whether Roblox is actually letting you enter. Play, login, server, and device prompts belong in Roblox, because a reposted reward claim or alternate link should not become the path you trust.
Outside tips can wait until access is clear. A non-Roblox login, outside download, or reward claim before joining is a strong reason to back out and return to Roblox.
The play button and server area give the clearest launch signal. If the play button works, enter normally. If Roblox shows no server, a restriction, a loading issue, or a device problem, treat that as an access issue rather than a gameplay mistake. Refreshing Roblox, trying another device, or reading the server prompt is safer than hunting for alternate launch links.
A launch problem can feel like gameplay confusion, but routes and controls cannot help until the game opens. Separating access from play keeps the next decision clean: solve the Roblox prompt, or enter the game and start reading the school map.
Once the game opens, the launch question is done. The next useful decision is where to stand while you read controls, player traffic, and menus. If Roblox still will not launch, hold off on route decisions until the client prompt gives you a clearer reason.