Hi Dimitrios,
First, let’s set some things clear in order to give the right answers. What version do you have? Have you done any upgrades?
Which way? If in 2016.2 version they had a number of Attended/Unattended or FO/BO robots, when migrating to 2017.1 the number of robots will be transfered to the new licensing.
Task scheduler is not supported since 2016 version - meaning if something goes wrong if you use it, we don’t offer solutions.
The recommendation of using Orchestrator is because it has improved a lot(in matters of security, logging, licensing etc.) and UiPath is offering full support on it.
So, again, how were you running the processes before and what’s changed now? Please provide Studio/Robot versions.
Thanks!