I am agree, that team has prolong pre-sale and I don't really like it. At the same time I wanna say that market conditions changed significantly, so they didn't have other choices rather than extend pre-sale and shift dates. Not only Adab did that, but other ICOs as well.
Today, so many teams do, because the market is still falling. This is where the cryptocurrency market will start to rise, and new teams will not extend the sale of tokens many times.