Hi,
can you add a screenshot or something?
The first impression - field Due Date is required, but not displayed for the type of action (Edit, create, view screen)
We discussed problem like this in this topic https://community.atlassian.com/t5/Jira-questions/screen-scheme/qaq-p/1151539#M366733
Does your account have "schedule issues" permission?
Also, could you try the "field finder" under the "configure fields" option on screen?
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