Please write an email to my professor explaining why I am having problem submitting my ppt slides. Reason: I cant login the e-learning platform for the past few day (It shows a DNS problem when I open the platform), Also, I was never informed that I need to submit the ppt beforehead so I already deleted the slides and there was no backup (I did not use a cloud ppt). Please write in a polite way. Thank you, end the letter with my name: Oscar