You are good. I have a similar issue. The system keeps saying our photos are too dark or too light and the photo sizes. I uploaded it, and I emailed them about the warning I got before submission. And this is the response I gotYes, I have the same issue but I don't know what to do.
So, I visited a professional photographer and show them the requirements and he adjusts the pixel size which is mentioned on the IRCC website. But when I submit the photo again it says the photo is too dark. I explain the issue to my photographer and he told me that "I fulfill all requirements" please submit your photo maybe it's a system error.
Got an email on December 7 and I submitted my photo on next day. (I tried my best to fix the photo issue).
Since then no update it's been a week still I am waiting for my photo approval and eCOPR.
I hope I can get it soon.
“All three photos have been reviewed and there are no issues. We have recently updated our photo uploading tool and we are aware of the issues and are working on a solution. There is no further action required from you at this time.
The status of your Photos in the portal will remain at Ready for Review until the PR Card status is updated to Sent to Client or sent to IRCC.”