Gst late fee problem..unable to file 3b plzzz help someone urgent

i m a online seller amazon..

i register gst and started gst from febrauray 2018
but i did not know i must file gstr 3b every month
my frend told we must file every 3months..
soo i only filing gstr1 till now..
soo saad..
soo when i tried to file now.. late fee is showing heavy amount
i calculated.. it becomes total 40 thosand.m

but i have 1 confusion..

i made sales in february so i filed tax returns
so when i tried to file in march.. it showing 50Rs per day fine
so from next month onwards.. if i file nil return..
will late fee come 20rs per day or 50rs per day
does late fee count as tax liability and system not calculate as nil return ??

bcz if i file all rteurns today

i calculated..

for nil return
total becomes 20thosand.. i can pay

if it is not nil returns
50rs per day
total becomes 40thosand
i canot pay heavy.. i wnt cancel my gst no

can someone help me..
with ur experince..
when u paid more than 1month late fee..
did system calculated late fee fine as 20rs per day nil return.. or

does system see LATE FEE LIABILITY
as TAX LIABILITY and charge 50rs per day ??

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1 more way ou

1 more way out..
can i cancel my gst no will gst office approve

and can i register again with same pan card after 2 months

or can i register my firm and get a pan card in firm name then apply fresh gst no

i m not making any profit also amazon sale business.. soo saad.