There is a data protection policy, of course.
Apart from Itep Pictures, all others seem to be in Turkey. Are you based in Turkey?
If yes, allow me to place zero trust on everything-Turkey, under the current government/leadership. I strongly believe that Turkey lacks the basic/fundamental freedoms and rule of law is going whichever way this regime's leader wants it to go.
I would similarly hesitate to upload such data to Iran, North Korea, Syria.
If no, where are you based?
You'll need to sign a DPA with them to be compliant with the GDPR tho, and they'd need to disclose where the data will be stored and processed and how they maintain control over that data if it's a third party.