Unable to DL using E-H

While Chaika and NH work fine E-H does not work for me

To Reproduce
Login using EHentai Login
Clicking download gallery using the Firefox extension gives the following in the log
[---INFO---]--2019-Oct-30 21:57:22-: Finished handling item
[---INFO---]--2019-Oct-30 21:57:22-: Failed to import item: BadZipFile("File is not a zip file",)
[---INFO---]--2019-Oct-30 21:57:21-: Waiting on post-processing from "exhentai"...
[---INFO---]--2019-Oct-30 21:57:15-: Downloading "2" requests for https://exhentai.org/g/1509162/87cf84cdae/
[---INFO---]--2019-Oct-30 21:57:15-: Received 2 requests from "exhentai"
[---INFO---]--2019-Oct-30 21:57:10-: Querying resources from "exhentai"...
[---INFO---]--2019-Oct-30 21:57:09-: Handling url https://exhentai.org/g/1509162/87cf84cdae/
[---INFO---]--2019-Oct-30 21:57:09-: Adding https://exhentai.org/g/1509162/87cf84cdae/

Expected behavior
To download from EH

Logs
error.log

Environment:
Windows 10
Firefox 72
HPX 0.12.3

[twiddli]

Hello,

1. Do you have access to exhentai as per EHentai Login?
2. Are you aware of EHentai Downloader only supporting downloads using credits/gp atm.?
3. Do you have enough credits/gp?

1: Yes
2: Yes. I download using credits/gp normally
3: Yes.

It's a general problem present with all E-H galleries I've tried.
Taking https://exhentai.org/g/1509162/87cf84cdae/ for example gave me the log in the first post.

[twiddli]

Can you try downloading in debug mode for the debug.log?
You can also provide the plugin.log inside the EHentai Downloader plugin folder.

Here
debug.log
EHentai Metadata plugin.log
plugin.log

[twiddli]

Can you try download with the setting Delete lefover files when download fails set to false, then look into the folder cache/download for the file that was just downloaded and check if it's valid?

Nope, seems to be invalid.
For https://exhentai.org/g/1510351/81a60c00a8/, I got this NieR_ Yurimata.zip
debug.log
plugin.log

[twiddli]

okay I think it might be a race condition, the file isn't getting prepared in time for the link to be available, maybe
i'll try and tweak things a little

Yes, I've noticed that. The download link takes around 10 seconds to be available for download but in HPX, the DL has already failed by then.