Did you check the minimum open server requirements for R80.30? The SMS must have allocated minimally at least 2 cores and 8GB of RAM. Hard drive must be at least 110GB (you don't have to use fixed pre-allocated, dynamic allocation is fine). For distributed gateways minimum requirements are 2 cores with 4GB and 110GB hard drive. If you don't meet these minimum specifications you'll experience the exact symptoms you are describing.
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