Android does not recognize long .pdf file names

[jeffery_9460]

Files that have been created on my workstation with Adobe Acrobat 2020 using long names are not recognized on the Android Samsung SM-X818 tablet. The tablet does have Adobe Acrobat reader installed but will not open the .pdf that I created on my workstation. The Android cuts off the names of the files including the type of file. As a result it doesn't know what application to use.
Notice that the file thumbnail place holders in the included photo are all gray with a blank page.
Samsung:

SM-X818U Tablet

Android Version 14

w/Adobe Acrobat Version 24.9.1.35566 

Workstation Windows 11

w/Adobe Acrobat Std 2020 Classic Version 2020.005.30680 

[kglad]

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

<"moved from using the community bugs">

[jeffery_9460]

It would help to get a reply related to the issue and not one that states my issue has been moved to a different location.

[kglad]

i'm sorry.  you posted in a forum for questions about how to use adobe's forums and while i have expertise in serveral adobe areas, i do not have expertise in adobe's mobile reader so i do not know the answer to your question.

your post was moved to the adobe mobile reader forum (https://community.adobe.com/t5/acrobat-reader-mobile-discussions/android-does-not-recognize-long-pdf...)  where experts there can help you, if they choose.