No update channel visible

hi and thanks for your answers.
1st i have to apologize for my late reply (somehow i did not get any reply-notification.mail)

also, i could not really understand your reply, so may i kindly ask to make simple replies to simple questions?

  • do php modifications disable the update channel?
    in this case i suggest some more specific hint in the admin menu:
    “update disabled for corrupted files”
    And since i changed only 1-2 lines my effort after updating seems manageable

In the other hand i HAD to make changes because otherwise all users could see each others Email adress - an issue wich seems unresolved and lacking attention even though grpd seems the #1 topic everywhere…
So IMHO no reason to get polemic in answers for simple,clear and kind questions.

  • is there any recommended procedure for own modifications? e.g. wordpress has child themes own modifications.

  • do you need log files? if yes wich ones?
    The answers imply that you already know the answer of my question so i do not need to reveal/censor my users IP-Adresses
    ofc i could just restart apache and post the latest logfile if you told me to do so

greetings and thanks in advance for your help. NC is actually a great community project.
Matt