My apologies@ selvakk is absolutely right. You do not need the POE letter now to get the Study permit at the Airport. I just received a letter from Delhi Immigration confirming the same. @selvakk was spot on is mentioning that all the student information are already loaded in their centralised...
Also since you have done your basic education from open schooling ( basically studying through correspondence) and not from a regular English medium school.
If you read the non Sds document checklist form, it says all these are recommended and not a must. However, the logic is if it is recommended, you must send it.
The form cannot be opened with Acrobat reader in your PC. I suggest you contact a travel agent or immigration agent. Also if you are using Mac download a paid version of Acrobat DC.
You will need to submit IELTS even for Non SDs. Since you have done your schooling from open school, VO is not convinced whether you can handle English as a means of communication. Though for SDS IELTS is recommended, but in your case its a MUST
I absolutely agree with you. IRCC processing times are very bad for some cases which are taking extraordinary long times. They should pull in more visa officers from Scandinavian countries to handle the load.
Her mother can travel to settle down your sister. The mother is not considered as accompanying person for the purpose of 5707/5465 form. Airbnb receipts are fine and return ticket of mother is must.
You will need a POE to get the Study Permit. One of my friend who entered Canada yesterday had to produce it to the immigration officer in Vancouver International Airport. I suggest you send webform and also check with any helpline in your country IRCC office.
The webform is the correct way of communicating an error. The VO will have this message at the time of reviewing your application. Just be patient and I pray that you have a positive decision.