@cereal_shopper
Do not erase your old searches; there is a chance that whatever eBay has done is temporary, or that your old searches can be restored.
There were some major search problems that affected lots of users today -- you may possibly be seeing some fall-out from that.
One thing you can try is signing in to your account using a private or incognito browser window, then try your searches again. If your searches work in a private or incognito browser, you should be able to recover your searches in your usual browser window by clearing your eBay browser history "for all time".
If that does not help:
Can you possibly share a link to your most important saved search directly from your Saved Searches page by right clicking on the search title, choosing copy link and pasting that link into a follow-up message here, and also a description of what you were searching for -- what keywords, category and filter options you were using? Possibly the original link will contain the original search parameters, even if the link is now redirected to a category page when loaded, a new search can be created that covers the same items.
From time to time eBay changes categories around; if a search suddenly gets directed into a new category, some of the item-specific filters may no longer work.
I know that it is no fun when eBay makes unanticipated search changes; back when eBay did away with wildcard searches, I had hundreds of bookmarked searches that all suddenly stopped working at the same time, and each one had to be dumped or recreated from scratch using entirely different search syntax.
