Yemeksepeti Masterpass Account Linking Keeps Failing

For the past several months, I have been unable to add a payment card to my Yemeksepeti account because I consistently receive the following error when trying to link my Masterpass account: “This user ID already exists. Please enter a different user ID.” This problem has been ongoing for about three months and has not been resolved despite my attempts to fix it on my side. To rule out a user-side issue, I deleted my Yemeksepeti account and opened a new one, but the same error continues to appear whenever I try to link Masterpass and add my card. Because of this, I cannot save a payment card or use Masterpass for my Yemeksepeti orders, which is very inconvenient. I kindly request that you investigate this issue on your side, correct whatever is causing this account-related error, and enable me to successfully link my Masterpass account and add my payment card to Yemeksepeti as soon as possible.