I did the sameI had renewed my PR card renewed while my citizenship application was in process. Received it in 21 days while I was waiting for an oath invite.
It’s your right to renew your PR card. Tell whoever told you that you can’t have two applications running to SHUT UP!
A suggestion:
Don’t be disheartened and lose sleep. This moment will only make you stronger!
And I heard about this nonsense about having PR renewal will put citizenship app on hold ... I asked IRCC on the phone and was told it was not true