[Resolved] error in cms + cannot identify default built language before adding translation

hi i chat today with support about this website
i installed fresh WPML on old (used to be) translated website- that we REbuild recently

and i get the error massage added below.
the supporter sent me a link showing how to resolve it- by adding a function to "functions" then enter home page- but it didn't fix it completely.
it allowed me to add English as a second language, (so that 1 fix), but my default language cannot be set to hebraw- The whole websites default language is HEB and all the content suppose to be identified as HEB before i could add ENG as a second one and add ENG translations.
+i still get the error in CMS

please help
since its a LIVE in production website- i turned off WMPL CMS for now

thank you

We have detected a problem with some tables in the database. Please contact WPML support to get this fixed.

Table 'diamondbourse_db.qgl_icl_strings' doesn't exist
Array
(
[language] => en
[context] => WP Endpoints
[gettext_context] =>
[domain_name_context_md5] => 3a448b300c73de9c6696651892b08d2f
[name] => wc-api
[value] => wc-api
[status] => 0
[translation_priority] => optional
[allow_empty_value] =>
)