ID LIKE TO VISIT CANADA DO I NEED A INVITATION LETTER?

[fortnite12]

I PREVIOUSLY HAD 3 DIFFERENT APPLICATIONS FOR VISAS ALL BEING SUCCESSFULLY APPROVED. I NOW WANT TO RENEW MY VISA DUE TO IT BEING EXPIRED. DO I NEED A LETTER OF INVITATION STILL?
PLEASE A EXPERIENCED PERSON

 

[steaky]

No shouting!