Have you exported your private key? JPEG file or something?
It seems that the private key was deleted that's why you're unable to send.
To delete an account, press it to select it, open the pop-up menu, and press Delete. Note, you cannot delete your HD accounts, only single address accounts. When deleting an account, you are given the option to delete the account completely, or only delete its private key. Deleting only the private key will convert the account into a watch-only address, allowing you to monitor the balance and receive payments to the account, but not to spend from it.