@arubislander OK perfect.
@arubislander It is not exactly the most useful solution. I know.
I think the problem is clearly related to uAdBlock. (Thank you all for answering)
For me deactivating uAdBlock, or use UT Tweak Tool app from OpenStore and clean all cache of uAdBlock and than uninstall it... didn't work.
Problem appeared after installation ... before trying Onion Browser & without installing uAdBlock.
Maybe I did try uAdBlock in the distant past .. as you say.
But I did a very recent installation and it was no problem for me to do a reinstallation with ubports-installer again (with wipe userdata). It worked for me. THX!
Happy with Ubuntu Touch
@mk73 Hi! Thanks for the instructions and suggestions.
I cleaned all cache, data and configuration of Onion Browser app, on UT Tweak Tool. Than uninstalled Onion Browser. I cleaned the Morph Browser too. I restated devide... & it still does not open the page.