How to open???

Hi,

I tried to cleanse the dust particles inside the screen by forcibly pulling off the panel. I was wrong. It shouldn't be done that way. So I glued it back. Accidentally a part of the glue seeped in and the 'button' of the 'Contacts' got pasted. Now I'm not able to use the 'Contacts' button. It eternally remains fixed to the panel.

So how can I bring it back to the original position?

The model is Singular Audiovox SMT5600.

Any help, please.

Thanks a lot.

Vincent