One inbox, read by the person who maintains the site. No ticket system, no chat widget, no phone number — those would be decoration on a site this size.
Email is the only channelOnce a code has been rotated out by the developers, no site can bring it back. We can only take it off the list faster.
Those sit with Roblox or with the game's developers. We have no access to either and cannot look into an account.
Same reason. Rewards that did not arrive after a successful redemption are a developer-side issue.
We publish codes the developers release. We do not have a supply of unreleased ones to hand out.
On reply times. There is no promise to make here. Mail gets read, corrections get made, but this is a small site and a fast answer is not something to commit to. Time-sensitive matters are better raised in the game's own community channels.