Check the listing, you will definitely see some problem not going live like any brand name is not used in the title, bullet point or description or there is some wrong information about the product. Some hair and detail of the product is written because the generated description is not correct every time, hence it is important to cross check. Any brand logo or trademark is not visible on the uploaded image or something like a watermark. After listing, if the product is showing "currently unavailable" on the buyer portal, then there must be some mistake in the listing from what I have mentioned. For now, whatever I remembered, I have mentioned it. Now check the listing. Which words should not be kept in the title, description and bullet points, see them also and correct them, like do not write perfect, do not use words like high-quality, premium best. After updating the listing, wait for 24 hours and see and tell me whether the problem got solved.