Problem during the communication with Pagamento Digital

wasare,

There seems to be problem in the communication with pagamento digital servers.
Sometimes the pagamento digital fails to return to the webshop sales completed screen. Instead, it just goes to a blank page. When that happens, the method ''uc_pagamento_digital_finalize'' is not called, thus resulting in an inconsistent state(some triggers in the ubercart module are not activated, like stock number decrease).

After a look in the source code(uc_pagamento_digital.module, line 463):
... window.location = "'. $url_conclusao_compra .'"; ...

It seems the module relies on Javascript to execute the final stage of the sales flow, and that is fragile in some occasions.

What actions would you suggest to remove these occasional problems?