Knowledge Panel Updates Without Being Able to Verify?

HI- my company acquired another company for which their product matched the name of their company. So think of it like this: * Closed Company Name: LX * Product of closed company name: LX * My company name: AC On Google, when searching for the product name only, it shows permanently closed. Of course, my company is still open and sells this product, and we fear that anyone seeing "permanently closed" might think the product is no longer available. So a long-winded way of getting to the question: How can I update the knowledge panel without having an email address domain of the former company to verify? Facing a similar issue on Bing, where I can actually suggest an edit without logging in, however, this hasnt proved to work.