The May 1944, 210 squadron reports exist as pdf files in the British National Archives.
You can download them for free. The files are the May 1944 210 Squadron Records of Events and the May 1944 210 Squadron Summary of Events.
Starting from this page:
https://discovery.nationalarchives.gov.uk/
First Register (see right side of page 4th line down).
Then Sign-in (if the act of registration does not keep you signed in).
The two items you want to search for are:
AIR 27/1300/10
(which you will add individually to your shopping cart)
and
AIR 27/1300/9
As you check out you can click a box which will allow you to download the files for free.