nginx ispconfig @debian - vhost changes lost every day

Hi,
i hope somebody could help with this issue:

i have added the let's encrypt certs from the general :8080 port also to the :8081 in apps.vhost @ ngixn config, what is working perfect & i can use all apps via the :8081 port with ssl too
but every day the file is changed from the system and set back to default & https login is lost for webmail & phpmyadmin for example

setup in use is perfect server for debian 9 (i use 10) + nginx + php7.3 + ispconfig from the tutorials

I had a look now everywhere also i cannot find anything in ispconfig settings, where i can apply the certs for the apps.vhost permanent of ispconfig for the :8081 port
I know direct change of vhost files is not the best ... but no idea how to change it in another way or where (maybe i have not seen this setting ..)

Thanks in advance for an idea how to fix this

 

Create custom conf folder for it so it won't be reset to default?

 

How can I do this?
You mean with an additional nginx host conf file?
Or better - what must be inside that there is no conflict with ispconfig

I have changed to ispconfig since 2 weeks - I am learning as much as possible at the moment about it - but to this I have nothing found what would be the best way

 

Else make it immutable (man chattr).

Code:

 # chattr +i /path/to/conf/file.conf 

 

Read more about about custom conf here: https://www.howtoforge.com/community/threads/another-conf-custom-questions.70285/