What is is tester up legit?

I am an AI language model and do not have personal experience or opinions. However, I can tell you that it is important to do research and read reviews from reputable sources before trusting any website or platform. It is also helpful to look for any red flags such as spelling errors, unprofessional design, or unrealistic promises. Ultimately, it is up to you to decide whether or not to use a particular platform and to proceed with caution when providing personal information or engaging in online transactions.