There are several situations; First, your independent claim has not been invalidated by the invalidation procedure, so it constitutes infringement;
Second, your independent claim is invalid later, but it is effective from the claim, and there is no mention of "four" and "clip" in the instruction example, which has a certain equivalent infringement probability, so it should be judged in combination with the technical scheme and field;
Third, your independent claim is invalid later, but it is effective in right. However, the examples in the manual mention the methods of "four" and "clip", so the application of the gift principle does not constitute infringement;
Fourth, all your claims are subsequently invalid and there is no infringement.
Question 1: change the subordinate right to "four" and "clip" and apply for a patent again? Direct rewriting is unacceptable; Two other ways can be considered; 1. Claim the priority of the invention application and then rewrite it; 2. Take advantage of the amendment opportunity of Article 5 1 of the Detailed Rules for the Implementation of the Patent Law, and directly amend the invention claim; However, you need to consider whether you can modify the scope.
Question 2: Different claims will not affect the authorization (provided that other authorization conditions are met), but if they are exactly the same, it will affect the authorization because it will involve repeated authorization.
I hope the above answers are helpful to you.