Fulfillment and Billing Portal error

I have recently purchased Mathcad 15 and below is the error i am getting, even after entering login details.

Your login attempt has failed. Make sure the username and password are correct.

Anyone assistant will be appreciated.

19-Tanzanite

“ I have recently purchased Mathcad 15” how? Mathcad 15 hasn’t been purchasable since the end of 2021.

PTC Marketer for Creo and Mathcad. I run their YouTube channels, some Creo campaigns, and all Mathcad campaigns and communications.

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