NB: Try this at your own risk...
Almost of trial blackberry software are time limited fonction, in order to make the trial longer instead of 7 days you can have 70000 days, unlimited access.
once downloading trials from their official websites or some online store follow those instruction:
1- Change the date on your blackberry to a date in the future a few years or however long you'd like (ex: jan 1th 2020)
2- Make sure to make source off
3- Restart your BB with battery pull
4- Install all trials you want,
5- Open the applocation
6- Close it and restart your devise with battery pull
7- Change date back to normal.