Now this happens quite often and this is normal. When the market isn't particularly positive and people don't make a lot of money on trades, then there is no extra money to participate in ICO. When you have 2 ETH, not 10 - you obviously won't buy tokens so actively during ICO. Therefore, many projects don't even collect softcaps, although the idea and the team of the project are great! Therefore, they extend the duration of ICO.So, everything is simple.