Problems with plex

hi, I have a problem with plex Android. Basically I can not enter IP because the OK button is not enabled. The same application on other Android smartphone operating normally. I believe there is something that blocks the transmission of application data but can not figure out what. Can anyone help?

Do you use Chinese or international version firmware? In case of the Chinese firmware, please check if all permissions are opened for this app.

thanks for the reply, use the firmware in the picture, regarding the permissions I saw in the center security, and I do not think that something is missing.

possible that I can not solve this problem? dear meizu this is not good!

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