APNS feedback gives incorrect data. Who faced?

Question

iOS

I am using ApnsPHP. Everything worked great. I pull feedback, tokens are returned, I safely delete these tokens in the database.
But a month ago, something strange began to happen. Now feedback returns tokens that I don't have in the database. And not at all and never. I paid attention to the timestamp returned along with each token, it has a value, for example, 1972, 2087 and the like. In general, Google did not help me. The only thing I found out is that such data can be on the sandbox, but I have an apns Production certificate and nothing has changed on the server. But I still created a new certificate and replaced - the behavior remained the same. As a result, for a month now my tokens have not been deleted from the database and I send pushes, apparently, to invalid tokens as well. Although earlier removed 300-400 per week.