Welcome to forum.
Until Android 7, you can still use Primo versions.
Any NextGen version works also on newer Android (Oreo...).
No, you can not bypass trial period. You can only buy it.
Versions that are found in forums are based on this official, but rather modified, so they do not mess with the purchased.
You can choose whatever you want, look in [Only registered and activated users can see links. ], the latest one is PAL.
Now, keep on reading, a little patience, it's not difficult. Take more time, everything is on the forum.
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