Hello,
I have checked at the local server and there is no such issue found in the file upload, it might have happened if the file is not uploaded properly and therefore it is not accessible the admin side.
Kindly check that you are using the latest version of ARMember Lite(v4.0.44) if not then kindly update the ARMember Lite as per your requirements and also check by temporary deactivate other plugin so if any other plugin conflicts then you may come to know the issue.
Regarding, sending the file to the admin, then ARMember Lite does provide a facility to add the custom field data at the email and to achieve this you can navigate to the ARMember Lite -> Email Notifications -> Edit the email template, and here at the “Template Tags” you will be able to check the “User Meta Key” tag add this.
After adding it will be added as “{ARM_USERMETA_meta_key}” here replace the “meta_key” with the file upload field’s meta_key. To get the meta_key navigate to the ARMember Lite -> Manage Forms -> Edit form and here at the field’s settings you will get the meta_key add this to the tag and then admin will be sent the data accordingly.
Please check accordingly and let me know how it goes.
Thanks