Paypal says it got a blank address; worked OK for last year.

Hi,

I have been using V1.5.1 with Paypal express for about one year and it worked OK.

In the last 4 days I have had three new customers who registered and put products in their shopping cart but did not complete their purchases.
I used the "recover cart sales" add on to email them but got no reply.

I decided to check the checkout process with my test log on in the German version of my site. When I clicked on the Paypal Express button I got a warning that the address field I sent Paypal was empty. I tried again with the same result.

The message is from Zencart "MODULES_PAYMENT_PAYPALWPP_TEXT_BLANK_ADDRESS"
in the German version - /home/httpd/vhosts/simmar.ch/httpdocs/catalog/includes/languages/german/modules/payment/paypalwpp.php

I went to my profile in Zen Cart and checked my address details were OK, they are - then I went back to the checkout and it worked OK.
Then I signed on with a different test log on and the checkout process worked fine.

I checked my log file and there are no logs for these three customer dates or for my test today..

Now I am trying to figure out if it was just a one-off thing or do I have a problem.

I checked the "blank address" posts here but nothing seemed similar.

Anybody please help or suggest next steps`
Many thanks

Should have said - if you want to look at the site then go here https://www.simmar.ch/catalog

There are both English and German versions, should be identical !!

Customer orders are coming through OK and I ran a couple more tests which worked OK. I will just have to assume it was the Gods of the Internet having a bad hair day

Thanks