Plugin not working for me

I have been racking my brain for a solution, but this plugin worked for me for one search then stopped. I’m wondering if there’s a potential conflict with this plugin I have that generates my SKUs?
https://ww.wp.xz.cn/plugins/woocommerce-product-sku-generator/

Any help would be appreciated!

https://ww.wp.xz.cn/plugins/search-by-sku-for-woocommerce/