We have 15 QRK MN running, the behaviour is different. Some are running without problems, at some it helps to restart at other it comes to "Missing" and we have to wait for 2 hours until we get rewards again.
We also have many other MN of other coins running, where all these problems do not exist.
Please come to a solution and a version that runs without big problems. We accept that updates and changes can cause problems, but with QRK the problem will soon be normal. We thought that version 10.7.3 would solve the problem, but now there are problems again with the new version. So it might be understandable that people are slowly switching from 7.3 to 7.4.