I looked up your Adobe ID and see that you are in Chile. You'll need to go through one of Adobe's Resellers to set up a subscription. Please visit Adobe Partner Connection Portal and search for resellers in your country.
Sorry to hear that you are facing issues with Adobe Stock services.
I have checked your account details and noticed that you have an active Creative Cloud For Teams subscription which does not include Adobe Stock.
Also, I would like to notify you that Adobe Stock is not available in your region so I would suggest you to find a reseller in your region to purchase the Adobe Stock image plans.
Please note: We've discontinued the single image purchase option for all the users. Adobe Stock is available now in subscription plans and you can also purchase Adobe Stock images using credits from Credit packs.
Feel free to update this thread in case of any additional questions.