All clean
Patches applied in this upload:
1) Intercept validation server using the "pre_http_request" hook
2) Make rocket_valid_key() function always return "true"
Additional changes:
1) \inc\admin\admin.php
Function rocket_send_analytics_data() is disabled (always returns false)
2) \inc\Engine\Preload\Database\Tables\Cache.php
Action add_action( 'init', [ $this, 'maybe_upgrade' ] ); is added inside the __construct()
Note: you do not need to edit files, everything is already done

I am just saying what patches are done in this upload as additional info. The file is clean, I compared line-by-line against the original version.