May i know which version are you using? Is it Tubeassistpro2 v3.3.4.6?
Could you export your task and log, then send them to us?
The way to export them:
About like task, please clear your task cache and uncheck this option, as we checked there is only one video on this channel, so after run one time, it can't search out more videos.
About comment, please input the link of the video here, not the link of a user.
About subscribe, please uncheck this option and clear the task cache too.
Hello, please contact us here and send your payment email or transaction id to us, we will check for you.
http://support.whitehatbox.com/