I had air suspension repair done a week ago on my 2010 e70 4.8 with adaptive drive. A trusted replaced air compressor and both bags( after market). Everything worked fine until today when I hit a pothole on highway. My x5 behaved just like it did before the repair- rear end is basically sitting on rear tires. I didn't notice any air leak when I was driving. Air compressor didnt activate when i restart the car later on. Called my indy, he said valve may be blocked. What do you guys think?

Thanks in anticipation.