Documentation related query

Hello everyone. I am applying for a student visa for ISI language school for April 26 intake. I am going through some serious issues. I have completed a 5 year integrated bachelors and masters degree after completing high school. I have marksheets for all 10 semesters but I don’t have a degree yet. I passed my bsc in 2023 and received my degree in march this year but due to error in my name it was returned and I haven’t received a replacement yet. I have completed my masters a few months ago and won’t be receiving it anytime soon. My university provides provisional certificate semester wise, mentioning name of the student and course he/she enrolled in and his marks in that particular semester.
Now my agent who is processing my visa application needs a degree certificate and recommends I either get provisional certificate or just submit documents upto my high school but then I will be left with a 5 years gap. He prefers avoiding my later study and says it will keep the profile simpler. I didn’t thought getting the certificate would be of any use since I have my detailed last semester marksheet with grand total of all semester. This made me start having trust issues. Can someone please give me some advice. I am from India and visa screening is very strict here. I know what’s the right thing to do but the certificate take 15 days to arrive (standard time) and then I will miss my april intake deadline. Thanks.

by Reon_____