which version should i downloaded

hii, ive been paying ae for a year now but i have a new computer and i cant download an older version. the newest one isnt working. my new computer has 8gb of ram AAAND this is the processor; intelcore i5 m560 ghz 2,67.

i dont know which version could work. and its getting hard to get an apk. anyways i would keep paying but theres no way to change it to an older version in creative cloud. i accept any suggestions ty :(