This thread is resolved. Here is a description of the problem and solution.
Problem: My site stopped working after updating WPM Multilingual CMS.
Fatal error: Call to undefined function icl_get_string_id() in /home/bleismad/public_html/wp-content/plugins/sitepress-multilingual-cms/classes/url-handling/class-wpml-endpoints-support.php on line 107
Solution: #1 please open your site again via FTP and remove sitepress-multilingual-cms #2 Check under Plugins -> All Plugins if all versions are removed #3 Install a fresh copy from https://wpml.org/de/account/downloads/
Relevant Documentation: https://wpml.org/faq/install-wpml/
This is the technical support forum for WPML - the multilingual WordPress plugin.