Dishwasher not cleaning?

Hi everyone,

Young married couple here trying to figure out what is going on with our dishwasher! We are having a difficult time with our dishwasher leaving lots of residue after washing. We have tried cleaning it by hand, taken it apart completely and soaked it, ran a clean cycle with white vinegar,and cleaned out the filter. We have even had someone come clear out the hose and plumbing. After every wash it seems more builds up. Any ideas on what we can do or is our dishwasher done for? Any advice would help! Thank you so much!