Monday and Hubspot

Hello, I have been using Monday for a number of years as a Real Estate Dashboard for my team. It is connected to Hubspot for Contacts. I had a specialist who helped me create the dashboard and systems we had wanted and has been working great so far. Recently I have lost formulas that show up properly on Monday aswell as the connection for Hubspot where they both speak for contacts. I need help with someone who can take a look at my system to fix things. The complex area are custom formulas that were made for commission calculators etc. Guys who originally set it up do not seem to be around anymore I bleieve it was Select Star Systems or something like that.