Wallet Issue

Hi,

I am using 0.0.6 v wallet on my Linux distribution. I had some Safex tokens in my wallet. Today I checked my wallet I can not see any login button in my wallet screen. I can only create new wallet or import the dat file. I imported the backup .dat file and it shows the balance. And again, I closed the wallet and open the problem is same. Is there is any solution for this.