Adobe iPhone app won’t combine pdfs suddenly

[Exquisite_Whirl0101]

Hi 

I used the adobe app to combine files just last week.  Then the other day I tried to combine files and it says cannot convert your file in red.  Since then I keep trying and it still won't work.  

is there any reason why this may be happening?  Or any suggestions on what to do to fix it?  I have a subscription to adobe and don't want to keep paying if I can't use its features.  I attached a picture of the error message. Thank you 

Megan 

[Amal.]

Hi there 

Hope you are doing well and sorry for the trouble. 

Is this an issue with a particular set of PDF files that you try to combine or with all the PDFs? Please try with a different set of PDF files and see if that works. 

Also, make sure that none of the files are password-protected or signed. Try updating the application to the latest version available on the App Store and reboot the device once. 

You can also try combining the PDFs online at https://adobe.ly/48iZEg6 and check. 

Let us know how it goes. 

~Amal

[Exquisite_Whirl0101]

My version is 25.10.51 (20251111.141426). I don't use it on the laptop only on my iphone.  I can use it there but I mostly use my phone for it.  That's where I receive the error message.

i did try opening them in mobile browser on my phone and that worked to combine the files.  I tried two other files to combine and that worked in the app so it must be something with the file itself.  Thank you for your help!
Megan