What's the 'Send Mixed Request' button on the 'Send Coins' page of my SYNC wallet do?
I think you use experimental wallet with beta version anon nitesend technology. Now for correct stacking you need to download from OP and use Sync Wallet 1.1.0
I'm using v1.1.0.0!
Wallet 1.1.0 have no button "Send Mixed Request"...
The nitesend wallet is also listed as v1.1.0. Just use the wallet from the OP. The one there now.