Yes, the Magic RDS 4 is not trivial. It is because the RDS itself is not trivial. On the other hand, you still have the option to start by enabling only the basic set of features and you don't have to deal with anything that seems complicated to you now. The Magic RDS 4 covers it all - from beginners to experts. It is entirely up to you how deep you go. The software currently comes with more than 100 pages of instructions, more than 50 kB of ballon help tips, email support is available, and last but not least, this forum is available to you at any time, the range of information provided on the issue of RDS is probably unmatched anywhere else on the Internet.
Instead of sharing your "frustration", focus on the information you already have. For example, in the Dynamic PS settings, if you set the Number of repeatings to 1 and selected Then clear, don't be surprised if the message disappears after being repeated once.
In order to continue, please tell me what measuring equipment you're using for setting correct RDS output level and what is your current FM deviation caused by RDS.