Google apps script installed onEdit trigger not working in more then 1000 spreadsheets.

[Rashid Khan]

I have installed onedit trigger in more then 1000 spreadsheets, but some of them do no work. I use those spreadsheets rarely. let say same sheet in edited after 3-5 months and I can see the trigger but it do not trigger.If I install it again and then It starts working.
What could be the reason of this?

[Yousuf Ahmed]

Please send me your spreadsheet i will try it and problems solve.

[Yousuf Ahmed]

Please send me your spreadsheet i will try it and problems solve. my email id : yousu...@gmail.com