Adsense income under Indian GST now ?

Just read an article which states that we have to 18% GST on earnings from foreign countries . e.g. Adsense. and under this case we are not qualified for rs 20 lakhs limit.

I am not earning that much but I found no clarity.
Now I have to pay income tax 20% slab + 18% GST ? ??

All those who have access to CA's , any HELP? what are you doing?