Hello , Trying to send my monthly invoices. But once saved they’re saying paid! I’ve can’t send them as say paid help.

Let's make sure to fix the issue and guide you on what to do, Deborah.

It's possible that the automatically apply credits option is turned on, that's why invoices get paid automatically as soon as you send them to your customers. 

You can undo the payment on the invoice by clicking the 1 payment link:

Then, click Clear Payment.
 

After that, click Save and close. You'll receive a prompt that tells you the transaction is linked to others, click Yes. Then, you can send the invoice to your customers.

Once you're done correcting your transactions, ensure to turn off the option. Here's how:

1. Go to the Gear icon, then Account and settings.
2. Click Advanced, under the Automation section, click the pencil icon. 
3. Toggle to turn off the Automatically apply credits option.
   
4. Click Save and Done.

In connection with this, learn how QuickBooks tries to match existing transactions to those that are downloaded from your bank. I've got this article for more details: Categorise And Match Bank Transactions In QuickBooks Online.

Let us know if you need help with invoices. As always, we're here to further help you with your concerns. Have a great the rest of the day!