The error is due to a problem in the app that causes it to misinterpret video stream requests to the recorder and to consider them as consecutive access attempts to the computer, which causes the device to lock itself up (in fact, error 153 is usually generated by illegal accesses).
The way to prevent this error from occurring is to uncheck the "Illegal login lock" option. Unchecking it does not take into account illegal access attempts, and therefore the above error does not occur.
In some recorders it can only be done from the Safire Control Center (thus from PC), while it cannot be done from the local menu of the recorder itself.
In cameras, the menu is presented as in the image below:
