Mobile vehicle diagnostics in Greenford

“Had my A/C done on my Mitsubishi Outlander on the 23rd August 2024, since then it has stopped working (symbol comes up but no cold air and no errors), have tried to visit website but it says its not secure and the certificate has failed so blocks access, the guy that came out seemed to know what he was doing, did vacuum check etc and all passed before toping up, I did ask to ensure he was using correct oil for my vehicle and that equipment hasnt been tanted with conductive fluid as my compressor is electric driven not mechanical. Dave has been out and put in leak seal, hopefully it is just a weap somewhere, he is very helpful and understanding and did a vacuum check again and it seemed fine, so fingers crossed all is good.”