Reopening pdf's every 15 minutes

[hacke3man]

I have had this problem for several weeks now. Every 15 minutes I have to reopen the files because the letters become distorted or disappear over time (picture attach). Is this something that has to do with the configuration of the program? I have several readers and none of them make this kind of problem. Hope someone can help me because this reader is the best, thanks.

[John - Tracker Supp]

Hi,

Can you please supply a sample PDF - but please ensure you include a proper subject and a link to your Forum post for reference - or your email may be deleted as Spam - many thanks.