“If you apply, you still need to submit a complete application. This means you must include all the supporting documents we ask for. If you can’t get some of these documents right now, you should wait to apply until you can get them.
If you already applied for a document but it’s delayed due to the COVID-19 pandemic, you can send proof that you’re trying to get it (like a receipt). Include a letter to tell us why you don’t have the document and when you’ll get it. Send us the document as soon as you have it to avoid more delays.”