Help cannot download and install anything

[Xs]

Hi everyone.
So I rooted my phone. Then installed the Exodus Android ROM. Now I can't download any app. Every time it says. Need SD card to download. I cant transfer any pics from pc or Bluetooth it says storage space has run out.
Is there a way I could download and install apps on phone storage coz I have like 1.37gb free space
Or will it be OK if I install an SD card.
Specs.
1. Exodus version. 5.1_20151229 unofficial ( SerriniTY)
2. Android version. Google Android 5.1.1_r33
3. Kernel version. 3.4.67
Thnx.

 

[atljsf]

if you installed a custom rom the only person who can support you atm is the rom developer or a rom support forum

other than that, find the original rom of your phone, flash it and forget this rom that doesn't have google play or proper sd card support installed