Without members, free games can't continue to be played, and only renewal members can use them. Discounted games and free themes for members can be used permanently.
In terms of preferential strength, American clothing is better, Japanese clothing has some exclusive games faster, while Hong Kong clothing is exclusive to Chinese, but the update is less and slower, mainly depending on the type of games you like, considering language and other factors.
To change the server, you must first check the card and change the psn account.
PS: PSN offers more discounts during Christmas and Spring Festival. You can see if there are any discounts on games that were usually expensive at that time.