Is there a way to have an invoice link included on the reminders without have to cut and paste it in every time?

It's nice to have you here in our forums today, @NealRM,

I can share some information about the payment link on your customer's invoices. Typically, when you enable your account for e-invoicing, the Pay Now button is added to the invoice or reminder sent to the customer.

If the link becomes unavailable on your online invoices, it's possible that the email preference is set to HTML or Plain Text. Let's try checking your Account and Settings and see if there are changes made to your Sale Preferences. Follow the steps below:

1. Go to the Gear icon at the top.
2. Choose Account and Settings.
3. Tap the Sales menu.
4. Click the Online Delivery section.
5. In the Additional email options for invoices drop-down, choose Online invoice.
6. Select Save, then Done.

Once done, try sending the reminder again. Here's how: 

1. Click the Sales menu and go to the Invoices tab.
2. Click into Overdue Invoices from the Money Bar. All invoices that are overdue will appear on the left-hand side.
3. Select the box field next to the invoices that need to be sent to customers.
4. Click the Actions drop-down button and choose Send reminder.
   
5. Click Send.

Once your client receives the email, have them click the Review and Pay button to open the invoice details. At the top-right section of the electronic invoice, click Pay Now.

That's it! You can now send online invoices. You may refer to this article to know more about the process: How to let my customer pay their invoice online

Please update me on how it goes, @NealRM. I want to make sure you're able to get past this online invoicing issue. I'll be around to lend you a helping hand. Have a good one!