I requested image (240 sec. exp.) remotely using 0.355-m f/6.2 Schmidt-Cassegrain telescope of Abbey Ridge Observatory (Canada): http://aro.abbeyridgeobservatory.ca/sm/images/PRHER-ID05289-OC663413-GR3166-...
I didn't detect activity of PR Her at 2022-05-10 05:04 UTC.
With best regards, Filipp Romanov.