Can't access WC8 remotely

Support, your last message is not related to the problem I described here, at the very beginning and so on. It has nothing to do with inputs IPx.
I had no issues with IPx and I had no issues with the logic and the PLC functioning- it worked properly all the time, even with PLC program based on CTS.
I had a problem with accessing the board via network- the board stopped to respond when I tried to access it via browser. Just read the previous messages.
After rebooting, it worked for few days (I was able to access to web interface via browser), then stopped being accessible again.
But the logic was still working correctly; it did it's job.
After changing PLC program so that timing was not based on CTS but based on INC and DELAY, the problem with network access has been solved.