[imdarkside]

If you turn of SPB I think your clock will still run on the trial. I suggest continuing with it until you are tired of it and then uninstalling it. You will not be able to have another trial version if you have run out of the 15 days. I think you can also uninstall it and then reinstall and your clock will stop then start again. A hard reset will set the clock back to 15 days.

You could also uninstall it, and then a few days later reinstall it to see what happens to your trial clock.