Level 1

Beginner invoices raised on alternative software

I am a complete beginner with Quickbooks online and have the essentials plan. I run a small bed and breakfast and have software called Eviivo which I use to take payments and raise invoices etc. Therefore I don't wish to raise invoices with Quickbooks. I signed up to Quickbooks because I now have to Make Tax Digital. I am completely lost. Is there a way I can just upload invoices that I have been paid for (over the last 3 months) and mark them as paid?