Hello, I have just seen a similar case to you. if you cannot link your application online there is two meanings for this either a technical issue and this can be solved by contacting the technical team through this link
http://www.cic.gc.ca/english/contac...56.872780704.1530439298-1365527977.1519209466 OR option two your documents were returned due to incomplete documents set, in this case you will not be able to link your application and they will not update you with the return status, also they will not send to you a tracking number to track it. If option two then your documents will be returned to you with the refund but that will take at least one month from dispatch date from IRCC as they will use only standard Canada post.
For the endorsement you can drop a mail to the province for extension of endorsement certificate.
Added to that, inquiry you sent takes from 2-3 weeks for a reply.
hope that my explanation helped you.