Seeing weight gain in week 1 is a good sign, that means that you're growing. You still have 3 more weeks to go, be patient and keep working hard, you'll see results. You're supposed to gain weight, you're trying to grow muscle here.
I have a few questions for you.
1. How much Red Growth are you taking per day? (1-3 capsules)
2. When are you taking Red Growth?
3. What does your current training program look like?
4. What does your current diet look like?
5. What is your weight, height, and body fat %?
6. Have you noticed any strength increases? Either more reps @ the same weight or the ability to lift heavier weights from before you started Red Growth?
Let's work together on optimizing your training program, but to do that I need some more info from you.