We recently had a problem with a short payment from Intuit, the resolution took several months and had to be escalated to the office of the president which is a semi-secrect customer service department (submit a request to the link in the blue area) https://www.intuit.com/company/executives/
Anyway this is still not fully resolved but it has come out that Intuit will no longer support Shopkeep POS systems, the old QB31 card reader is no longer made and the new one is not compatible.
As we only found out because Intuit used this as an excuse to close our case I thought the information may be useful to others