Same thing is happening to me. I just processed the renewal payment less than an hour ago, but since then I haven’t been able to access the sales invoices or purchase invoices, just get the wheel turning.
However, I do seem to be able to add invoices and receipts via the dashboard access.
Also, my colleague who has his own sign in to the same account is having no issues.
I have restarted my pc, and also tried Chrome.