Hi,
This is definitely not a trial mode limitation since this type of connection would be allowed in trial mode.
My feeling is that you may not have any live sessions configured. That wireless status icon is really intended to represent your 'current' connectivity status when in live mode so if you are not using live mode, this would generate an error like you are seeing.
If you are intending to sync over the air but in a more batch mode type setting, you can setup a button on your form configured with a 'button action' of 'DoSync'. Once this action is selected, you can set a Host ID=1 and a Profile ID=1(most likely).
Once you have that button on the form and deploy your new project, you should be able to sync your data in a 'batch' mode. If you do prefer live mode/real time syncing, you would need to use the "Live Sessions" tab as displayed in your screen shot above.
Let me know if that helps.