Machine learning forproduction specialization course 3 and 4 are missing

Hello sorry if this has already been asked.
i bought the Machine learning for production specialization on coursera some time ago but couldnt complete it.
Now when i came back i cant seem to find the course 3 and 4 anywhere. i have course 1 and 2.
I paid full amounts for them as well.
did they remove them?

I have the same issue. Is there a reason why the lessons were removed? Are you planning to update the content? Do you have any suggestions on how I can complete this specialization?

Thank you in advance

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