It should be possible to create custom post fields that will only appear if a certain selection is made in a different field.
For example, if there is a “Category” select field with the options “Suggestion” and “Issue”, it should be possible to add an additional “Device Info” field if “Issue” was selected as the category.
Thanks for the suggestion, we will consider it.
For now you can try optional custom fields, and/or select/multi-select fields with longer lists of options (e.g. Issue > Type1, Issue > Type2, Suggestion > Type1, Suggestion > Type2, etc.)