I think i found the problem. Because of the big size of excel file, wordpress stopped. I changed this and it is working.
Thanx
I have the same problem.
After account succes and get token succes:
Could not verify txt for _acme-challenge.kwekerijzeelenberg.nl. My key:liJvn5ZnsyrX7tw6B5CCnM23K9tXRie7HuK9eyU35U8
Try several times to renew, but no succes
