I dug a bit further and found that vminvoice_config table contains set (changed) parameters, but still sends default.

Also, in settings, I have product image disabled from showing on invoice, but it still shows it.

Please disregard second line in my last post. Was unrelated.

Have the same here, but send email has the right content. Do you have a fix for this ?

Don't know what caused it, since I've used it before without hassle, but solution is simple though.

Just change your Joomla default editor in Global Configuration to something other than TinyMCE. I changed it to JCE and problem's gone.

The underlying issue is still there, but you won't see it and it won't cause you problems.

sorry, didn't pay attention enough, posted a solution there for a completely different issue I've had.

since it's here, might as well mention it, it was to fix '?' showing up in empty div and p tags.

I have the same problem. Can not change change text in invoice email.
I did try this:

-> Just change your Joomla default editor in Global Configuration to something other than TinyMCE.
I changed it to JCE and problem's gone. <-

But still the same Problem. Do you have a fix for that?