I am a purchaseer if CCleaner for Mac . I purchased a plan licensing several computers in my home. I have not been able to use the product on my Main computer, a 2020 iMac. The software interface loads but does not function - i.e. the cleaner does not clean. The company's website was useless. It did not contain troubleshooting or resolution for my issue. In fact, I could not find a single working link to any contact request technical support. I also tested Piriform's licensing retrieval self service page and that did not appear to be working either. However, I did find a number of excoriating complaints about the software and lack of users' ability to contact the company. There were links one one page directing the user to get support but the links went to a page that had no information or other means to connect with technical support, and that angered me, because suggests the intention to deceive . If I don't promptly hear from someone who is qualified to help resolve my technical issues, I am going to appeal to the Federal Trade Commission to ask that the company be required to take immediate action to provide consumers with support options or face suspension from doing business in the US .