add-on tools unpluged from acrobat side toolbar

dear adobe support,

i was wrote some JavaScript with AcrobatSDK used to create one button as an add-on tool, the function is run properly as is.

but the problem is when I have to use the button, I should add the "add-on tools" button before we use the JS button.

mean while the add-on tools looks like not stable, I've been tried open and close acrobat with more than 10 PC with many different PDF document, and my JavaScript "add-on tools" always unplug from acrobat toolbar after 5-9 attempts to open and close document for views the document.

and after 5 times or 7 times i closed the acrobat, the shortcut in the right side  is removed and I don't know why it's removed and I must "add" the shortcut again

anyone can help to solve this problem or maybe adobe staff can solve this problem or any suggestion on it? (eg. calling JavaScript Object from C++) or something else.

I'll keep looking forward on this issue until this problem is solved,

thanks.