can't access device, web IDE only

Hi I have just set up a new Pro Mini and FT232 on a Ubuntu 17 64-bit laptop using USB

I had this problem with it at first, unable to open the com port
but I fixed it with this

sudo usermod -a -G dialout (username)
sudo chmod a+rw /dev/ttyUSB0

now my problem is that I have a similar problem with the web IDE. I'm assuming that it would be a good idea to get the web IDE to work eventually instead of downloading a bunch of libraries to my laptop and relying on it. I have had some weird experiences with the web ide before and I wanted to give it another try with this new install.

the solution above doesn't work, clearly, for this problem, not to mention it seems that it should work, assuming that child process inherit my account permissions

then I go back to the local IDE and it works fine.

Wondering if anyone has a solution for this.

thanks