Why can't I send HNT from Helium Wallet?

Hello, I'm facing an issue with my Helium Wallet. Could you please assist me with understanding why I'm unable to send HNT from my wallet? I've double-checked my balance and it's sufficient, yet the transaction seems to be getting stuck or encountering an error. I've also ensured that the receiving address is correct and the network fee is set appropriately. Could there be any other reasons that might be preventing the transaction from being processed? Your help would be greatly appreciated.