I can see unlocked icon on the upper right corner and there are no red error texts.
It's been a long time to send bts from this wallet so something might happened to this wallet.
I also try telegram support.

Thanks

Is the wallet unlocked when you try to send?
Are any errors showing (small red text somewhere)?

You may come to @btswallethelp in telegram to provide more details

I restored my wallet from a brainkey and tried to send bts to another bitshares account. Then I found my local client bts send button is gray out even I filled in the send form correctly. I don't see any error message except this send button issue.
What is the possibility of this problem?

Thanks