I've read a lot of your posts and the common denominator for all these problems is you. All these addons from multiple different developers not working just for you and no-one else indicates that you're either not following instructions properly or have installed things incorrectly. Legal action / asking for a refund will get you nowhere because you will need to provide proof that their addons are faulty, and you won't be able to because nobody else is experiencing these (constant) issues.