This should not happen.
The old version used to fail silently (for the users) and just attach a TXT file with the error to the email message. The new version shows fill errors when the user submits the form.
The only reason why it might happen is because you are still getting errors with the old version but they are not shown to the users and instead attached to the email message.
Can you check to see if there is a TXT file attached when you try version 1.2.4?
Regarding no support for XFA forms: this has always been the case since the first version of the plugin. There is progress being made to add XFA form support in the coming months. For now, there is no way PDFs with no AcroForm forms would work.
I would like to test your PDF file to double check. Can you send me your file to admin at maximum dot software?
There was no change in the new version that might conceivably cause your issue.
I think your issue is either file truncation by some other plugin or an image optimizer plugin stripping forms from PDF files.
ShortPixel Image Optimizer is known to cause your issue.
There is no txt file attachment on the email sent. The form is filled out as expected and sent properly.
The plugins I have installed are:
Automatic image ALT attributes – 2.0
Backup and Staging by WP Time Capsule – 1.21.24
Classic Editor – 1.5
Contact Form 7 – 5.2.1
Contact Form 7 – Dynamic Text Extension – 2.0.3
Contact Form 7 Extension For Mailchimp – 0.5.20
Contact Form 7 Signature Addon – 4.2.2
Contact Form Submissions – 1.6.4
Ditty News Ticker – 2.2.17
Duplicate Page – 4.2
GA Google Analytics – 20200325
Image Title Remove – 1.0
Imagify – 1.9.10
MainWP Child – 4.0.7.2
PDF Forms Filler for Contact Form 7 – 1.2.4
Rank Math SEO – 1.0.46
Shortcode For Current Date – 2.1.2
Sticky Menu (or Anything!) on Scroll – 2.21
UpdraftPlus – Backup/Restore – 1.16.26
WP Rocket – 3.6.3
WP Staging – 2.7.5
Ive emailed the form to your support
I don’t think I’ve received your form. If you can send it to my email at admin at maximum dot software then I will take a look at it.
Can you disable the ‘Imagify’ plugin and reupload your PDF file and reattach it to the form? I think that might be the culprit.
I can debug this issue for you if you don’t mind sending me a temporary wp-admin login details.
