Is it just Showbox? Can you try the following please?
Open the list of all Android applications installed>Apps>scroll down to Showbox and click it>Clear data
Try and run the program again.
We try to respond to e-mails and forum posts as fast as possible. We open normal office hours Monday - Friday. We aim to respond within 24 hours, and 97% of the time it is a lot less than that.
If you see responses at the weekend on this forum, that is from staff who visit voluntarily and post, unpaid.
If the above doesn't work, please let me know.