Hello Carlos94587, thank you for your question. It took me a while of life contemplation before I was able to put my mind together.
Well, the problem is that particles canvas (where the is floating stuff is happening) is overlapping your CTAs - canvas is ABOVE the buttons.
Solution is simple.
1) select your CTA button
2) set position of button to Relative (in styles tab)
3) set Z-index of button to any high number, let say 999. Z-index is located also in Styles tab if you choose element position to relative or absolute.
If you do not want to mess with your button position, you can select the layer, set the relative or absolute position to it and set this z-index to very low number.
What you need to achieve is to position CTA buttons ABOVE the layer with particles.
Hope it helped!
You can check http://notix.webflow.com - here is it implemented with CTAs. However, please make sure you follow steps above.