Thank you for answering!
I’m pretty much afraid of updating towards 3.9.x, since if something goes wrong, the qTranslate will not work anymore.
That’s why I tested it with 3.8.3 and asked this question, to be, let’s say, 99.9% sure that it is safe to proceed with update and zTranslate.
My web-site is: https://www.info-news.eu
PS. I’m happy to give donation (let’s say €10) if all works smoothly and there’s maintenance & constant update of this project.