Everything looks great, Noor, from a good bio to a thoughtful portfolio, reasonable rates, and specialised profiles.
I would only suggest removing the last sentence as it might come across as a bit negative. You don't want to use the word 'warning' or appear unfriendly which I'm sure you're not. If I were you, I would simply remove it. But if you want to have something similar on your profile you could simply state something like:
PS: Kindly keep all communications through Upwork.
