Hi there...
2 weeks later, another update is installed...I see something has changed in the sitemap, but it still is not as it should be
https://www.wat-betekent.nl/sitemap_index.xml
https://www.wat-betekent.nl/post-sitemap1.xml: this one has the most recent changes inside, but in the index it shows last modified 2018-12-03 (
https://www.wat-betekent.nl/post-sitemap7.xml: ths one has old posts in it, from 2010 en 2009. the index shows the most current date as last modified
And you wanted a login which I gave you, but that has never been used. So you did not look at this issue I suppose.