As I have problem with ccorrect invocie attachement after status change to paid I tried to send invoice link instead of pdf attachement
I got invoice with too big letters - see attached
Probably system takes style from template .
Additionally when user is not logged, after logging system do not lead to invoice
I found work around and creeateed link like
This works perfect (see atached) and do not produce any problems if user have to login
Honestly speaking I am became flustrated by the number of errors and bugs which this extension have