Can you take a video of what you are doing/seeing and attach it to a support ticket? https://www.tekgear.com/contact/open.php
Be sure to show the file name and detailed file size, before and after detach/attach of USB (write phase).
If the file appears on the Twiddler storage and is not named 1.cfg, 2.cfg or 3.cfg it will NOT be written to the Twiddler's permanent storage.
There can be only 8 files in the Twiddler Storage:
0.cfg
0.log
1.cfg
1.log
2.cfg
2.log
3.cfg
3.log
Any other file will be ignored during the write phase (unplugging USB) therefore not available for recall during the read phase (powering on the Twiddler).