Incomplete submission: the author has not finished editing and submitting the paper, and may be in the process of final proofreading and format adjustment.
Waiting for editorial review: the paper has been submitted, but it has not yet passed the editorial review. The editorial department needs to conduct technical review of the paper, including layout, charts, words, etc. This process may be different because of the processing speed of the editorial department.
In a word, it is normal to have an incomplete status, and it is generally necessary to wait patiently until the paper completes all the review processes and gets the correct status.