My base currency is CAD. I cannot buy a new stock in USD. The drop down box for currency does not work at all with a 4k display. The workaround is to port the kmy file to another computer with a regular HD display. Add the stock. Port the kmy file back to the 4k system. More generally, all drop down boxes throughout the software do not work with 4k resolution. You must not release the cursor and drag it down to your desired selection is the only workaround.