[Geschlossen] Change translation method

Background of the issue:
I have an old website versteckter Link where each page is translated without a translator, creating copies of each page in each language and translating directly page by page. I need to set up the new translator without creating bugs or deleting the actual translated pages.

I created a footer layout and need to translate it, but when I click on the words to translate them, a blank page opens and I can't translate it.

Just to let you know that "WPML is missing some records in the languages tables and it cannot fully work until this issue is fixed. "

Symptoms:
WPML is missing some records in the languages tables and it cannot fully work until this issue is fixed. A blank page opens when trying to translate the footer layout.

Questions:
How can I solve the blank page when I try to translate something?
How do I solve the error: 'WPML is missing some records in the languages tables and it cannot fully work until this issue is fixed'?