Hello,
I know the question you put is couple of years back and not sure if you are still using the plugin.
I am in a similar situation. I am having issues with downloading attachments which I don't see on my servers after the build. To overcome, I tried making the attachment content inline and read the pmt_content for writing it to a file via script, but due to OS limitation, the entire body can't be read into variable. I am stuck and there seems no response from the creator of the plugin and looks like it is orphan.
Appreciate if you can share your setup of getting attachments.
Btw. I have deployed Jenkins on WebLogic and running the plugin again O365
Thanks
Srini