Deadline not met for tribunal

I was receiving pip last year high rate daily living and standard mobility .. I got intouch with them has a worsening condition due a massive saddle pulmonary embolism comprising my heat and lungs ..it affected my mobility and I had TKR three months prior to this and have severe osteoarthritis in my other knee ..they closed my claim and I did the MR which failed , now taken it to tribunal which I’m awaiting a reply from .Sent all the supporting medical evidence but the DWP have missed the deadline so my question is do I just continue waiting for a response from tribunal ? I wish I’d never reported the worsening condition now tbh as they stopped my claim I’d had for a year for no reason at all .. new to all this so just need a bit of advice.