Did you write a cover letter explaining your circumstances?So you took an almost 2 year, full-time program program with no breaks and no failures, no leave? Is this you? If so did you notify IRCC and get approval for the change in DLI? If you got warning on Feb 11, 2020 for not attending classes did the university notify IRCC?
I came to Canada on September 2019 ,I dropped that semester on medical ground and it was approved by the university. I did not work on that semester. I started the next semester on Jan 3rd 2020 as a full time student and started working part time as well. After doing couple of classes I realized I did not want to continue on that university and started looking for other options and I stopped doing classes but I was working part time. On Feb 11th I got an attendance warning Email from the university as I was not doing classes. I got admission into another university On Feb 27th 2020 but the class started on April 6th 2020. I was working till the last week on March part time. I was enrolled throughout the whole semester as a full time student but did not do any classes.I applied for work permit in December 11th 2022 after completing the program for the second university and got the PGWP rejection letter on April 19th . What do you guys think has happened. What are my options now ?
If let's say September 2019 to December 2019 can be explained by the medical leave, then the issue is the winter semester starting January 2020 until April 2020, which looks unaccounted for on their side, i.e. you weren't attending classes at any institution. It's okay to switch institutions but you still need to be enrolled during the semester, otherwise it looks like you weren't studying.
I think you have to explain the circumstances and hope they accept your rationale.