This postponing of the crowdfunding just few hours before the launch of crowdfunding without any specific reason is strange. There was some kind of hype and people are getting involved and preparing themselves to put some money into. An official update with reasons of this postpone and next short term plans will work like fresh air.
I was really shoched that they have moved the ICO to a later date very close to ICO (not few hours, but 1+ day though). But it was just a first emotional reaction. They explained: even if they can successfully finish the ICO right now, in the current crypto market situation it might be not so good for investors, or not good at all. Many ICO went below ICO price when they were listed on exchanges, people decide to sell the tokens and convert to BTC before 1st of August even if they loose money.
I believe that the project might become stronger and gain more loyal supporters during the next month. More time means: 1) more development 2) more real supporters (not flippers). I think it's very important.
The sum Aventus is going to fund is the same and is fixed in US dollars: 15m (in fact it's 7.5m because the rest is sold to strategic partners and ivestors).
I have to admit, you don't see this too often (moving ICO to protect investors' interests). Usually ICO projects try to collect money ASAP no matter what.