I’m not seeing any Sponsored Product ads for any products. Sponsored Brands ads are showing, but not individual product ads. I’ve tried different browsers without extensions and even asked a couple of seller friends, but they don’t see the ads either.
Before assuming it is a platform issue, I would check the basics: confirm you still have the Buy Box, your products are in stock, there are no suppressed listings or policy violations, your budgets are not being exhausted early, and your bids are still competitive.
If all of those look normal and multiple campaigns or ASINs are affected at the same time, it may point to an advertising eligibility issue or a temporary system problem rather than something wrong with your campaign settings.