Obviously my wife and I are not the first people who were in the wrong place at the wrong time, when the global lockdown unfolded - meaning outside Thailand (in the UK).  Although our renewal date is in December it looks to be unilkely or impossible or very costly to somehow by then get back into Thailand to renew.  (The difficulties of starting from scratch are well known to us.)

So two linked questions - 

How did those with renewal dates which have already expired get on with Thai Immigration if not resident in Thaialnd at that time?

Is there any possibility of the annual renewal date being pushed back until travel back to LOS is possible, or not prohibitively expensive?

We understand the health versus economic arguments facing the Thai government and know that prorities are not determined by the fact that Thailand can be - and in this situation actually is - somebody's home, with a house and car just sitting there maintained as best we can from a distance, dependent on friends and neighbours.  But in the hope that somebody can tell us something positive that we've missed.

Thanks in advance.   

No one whose permission to stay expired while they were out of the country has been able to do anything. You have to start the process all over once travel is possible, there are n extensions for people out of the country.