Glad to know that all your spam posts are gone. If you need any help with my plugin in future then feel free to contact me again.
Regarding the Amazon affiliate links, I think Amazon provides a way by which you can use short urls instead of these really long ones. I haven’t used Amazon affiliate that much but I have seen lot of marketers use these short urls. So I am pretty sure there should be some way by which you can get these short urls from the Amazon affiliate page.
PS: I would appreciate if you can leave a review for my plugin at the WordPress plugin repo – https://wordpress.org/support/view/plugin-reviews/bulk-delete It would help more people to find my plugin. Thanks.