Can the instance limit, max. 20 be increased in SAS(Simple Application Server)?

Now I am using many Amazon Lightsail instances for my service all over world. Recently I found Alibaba Cloud was providing SAS with competitive price and more cores to race against it. But SAS is limited to maximum 20 instances in its document. The AWS Lightsail instance's limit is max. 20. But, it is adjustable. I am wondering the max qouta of SAS instance is changeable in Alibaba Cloud?