The invoice message came to me but after that a hole day passed and I didn't
receive any message from PayPal to complete the payment. What can I do?
No need to make 2 posts here, we already replied to your 1st post.
You received the Invoice, but it's up to you to complete the payment process.
You won't receive any message from Paypal until you won't have done it.
If the link is in the Invoice, you can use it.
If not, you can sometimes use the link on the Order summary or in the "Orders
placed" page.
If there is no link included, log in to your paypal account and send the whole
amount to the email address stated in the Invoice. The payment must be done by
"“Goods and Services”. You can also write a message with the Order number
and eventually a "Thank you"
Once the payment will be done, you will receive an email from Paypal to confirm
it.
Greece, Central Macedonia
France, Centre-Val de Loire