Sometimes software do not work as expected due to bugs. I installed the free version to have a look at UNA if it is suitable for my company, for example, friends request is not working. This is a free plan so I understand that UNA community should be the best place to ask for help. Unfortunately, this is to me not clear what I am purchasing. If this is only to get the power apps then it may be not worth the pain. Therefore, before taking any commercial decision I would need to understand the real cost of UNA. This is a start-up and any cent is important.