Any reason why my miner would close immediately as I start it ?!

try to run cmd first at admin mode and go in to exact path of sldm , and user this command

startlow sldm.exe --address (your address paste here without brackets)

i was also wondering  but not sure , maybe there will be only one jackpot . or many not sure ,only developer can tell

Not sure, no telepaths here.
But first step while troubleshooting - make sure miner can connect to the daemon.

Total amount of mineable coins - 10M (10.000.000)
if the last block will be with the jackpot, then I understand it will be 10 100 000

and I think it will take about 6-7 years

you should understand what everything is depend on community.
Max supply could be changed if necessary.

It's just a code, no any magic.

I was putting to much thread in the command line !

It was experimental because we use new PoW function.

10 weeks passed and we can treat this coin as stable now.

everything is depend on community.
lets wait for next 5 years before answer to this question.

if I understand correctly, a hypothetical increase in emissions is possible only through hardfork, which means there will be 2 coins - a classic with 10 million coins + a version with a modified amount. It's like endless coins seeking to switch to limited emissions, just the opposite)) I do not see any problems in it