I know how to pronounce and translate 上 in 1, but not sure if it is pronounced うえ or じょう in 2 and if it is also translated "when". Could someone explain case 2 please?
- 利用上{りようじょう}の注意{ちゅうい}
caution when using- computer name 上で使用している account name の Firefox
Firefox account name when using computer name
We pronounce it じょう like in Example 1 because we have 上 without any particle between it and the previous word, and it simply means 'on'.
In Example 1, it kind of works if we call it when, but in general, 上 is used as a suffix to mean as a matter of sth. Its literal meaning is
Cautions as a matter of usage
or even better, precautions. That's what happened in Example 1.
But you are confusing the order of words in Example 2. This 上 is not the suffix for 使用, thus the translation when using or as a matter of using is incorrect.
It is right after the word computer name. That's a thing. It should mean 'on'.
Also, account name is a name of somebody, so that の works as a case particle for indicating ownership.
computer name 上{じょう}で使用{しよう}している account name の Firefox
Account name's Firefox running on computer name
Edit: I found out that this phrase can be interpreted 2 ways. The first one is shown above. The other is:
The Firefox running on account name on computer name
It's how we interpret the account name part. Firefox has a system that allows multiple profiles to be made in one installation like chrome does, so grouping account name の Firefox makes sense. But if you think of, for example, a school, it is possible that account name means your school account and that it can be used to log in to any computer in your school. Thus, grouping computer name 上で使用している account name also makes sense.
