1. However you may go, I will follow you.

Question

2. No matter how you may go, I will follow you.

3. However you go, I will follow you.
4. No matter how you go, I will follow you.
[Can we use both 'go' and 'may go'? Any difference?]

5. It helps us talk to people at any place where they are.

6. It helps us talk to people wherever they are.

7. It helps us talk to people no matter where they are.
[Can #5 mean either #6 or #7? Or does #5 mean #6 alone?]

Answer 1

Yes, in this case, "go" or "may go" are okay.
However, when speaking of a method (how will you get there?), how and ever are two words, not one. However is a conjunction. "Your thesis is interesting, however, it is wrong." "How ever (with a push mower, a scythe, or a power mower) you cut the grass, it must be cut today."

5, 7, and 7 mean the same. #5 is awkward.

Answer 2

1. Wherever you may go, I will follow you.
2. No matter where you may go, I will follow you.

3. Wherever you go, I will follow you.
4. No matter where you go, I will follow you.
[Can we use both 'go' and 'may go'? Any difference?]