What is minimum amount of investment in ISINA? How much are you going to raise in total?

Minimum investment is 500 $.
We are going to raise - 10 424 400 $

What is the maximum amount of investment? and when will the fundraising? via IEO?

Maximum amount should be discussed individually , IEO will be : 28.10.19 - 30.10.19.

sales will last only three days? Do you think this will be enough to collect the necessary amount?

I think, it's enough. Anyway, it can be extended.

I think if the sales strategy and advertising campaign are well developed, then this number of days will be enough to collect all the funds.

any organization, if it has a well-developed sales strategy and advertising campaign, is doomed to success. I think
isina is no exception