Not only that, but there is a movement away from antigen tests in general, so past acceptance (of antigen tests) means nothing. If traveling overseas, do not rely on an antigen test to pass entry requirements. Presently the only thing they are absolutely good for is entry back into the US, and as I said in another post, that could change if the US and EU come to terms and adopt a common standard for entry (full vaccination + PCR test within 72hr of departure would be the obvious choice).