It is important to ensure your discord link is a permanent one. 

Here's how to make onE : 

On mobile:

1. select server

2. click on "Invite members"

3. Ensure "set this link to never expire" is selected

On pc:

3. Click Edit invite link

5. Select "never"

9. Generate new link!

1. Select the channel you want people to arrive at.

2. Create Invite

4. Click the "Expire after" drop down menu

6. Select the "Max number of uses" drop down menu

7. select "no limit"