Error 522 Connection Timeout

Over the weekend my web host changed my account to Auto SSL. Since then ShortPixel decided my images needed optimizing again. Most images have successfully now reoptimized but there are 53 images that have errors and 938 thumbnails. The Error message is (522 Origin Connection Time-out)

The errors seem to have occurred on images that have been updated with Enable Media Replace.

Any suggestions how to fix this?

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