A script runs multiple times per day to check the number of tokens in the wallet. Masternodes and Iridium nodes are suspended if the number of TFD tokens in the masternode’s wallet is less than the specified minimum amount of tokens of the respective masternode tier, or Iridium node.
You can have other tokens, and more TFD tokens in the wallet, but not less than the minimal amount. Make sure that you already have the necessary amount of tokens at the time when you registrate your node.
In case a masternode or Iridium node is suspended, there is unfortunately no way to activate it again. If your node is suspended, you need to registrate a new node.