Override theme /plugin twig files does not work

I’m having the same issue. However the installation on my server works like a charm. I have two options there:

  1. enable dev anvironment in .env and any changes to twig files are visible on refresh,
  2. or leave environment to production, cache on, but in this case I need to to go Settings -> system -> cache and clear cache

In both cases I can see the change in the twig file. Now, working on an installation on my client’s server I can’t get the changes to appear. The scss changes are visible, but twig is just dead. I don’t have access to anything else than custom theme folder so I can’t make any conf changes.

Does anyone have any idea what that could be and how to fix?

Thanks,
Grega