AT&T Issued T1 Options now worth $1

Would anybody be able to provide me with some advice here.

I own 6/17 $21 puts on T. After todays release of the Warner Discovery stock my puts were automatically converted to T1 Puts.

The value of these options are now essentially worthless.

Is there anything I can do here or did I screw myself by not paying attention to the news o the day?

Thanks!