Well don't! because not all projects are scam projects but the current situation of the market has made so many projects come to a
a stand still. Keep in mind that if they are to withdraw funds that were sent about 6 months ago when bitcoin was about $8k then they
can be withdrawing ETH which was worth $1000 US but now it will be worth $500 US. this is the main reason why most projects have slowed down but as soon as the cryptocurrency market rises you will see how projects are going to grow in the community.
Keep in mind, Not all ICOs are Scam projects. All the best in your crypto investments.