OK people, after trying every single solution suggested in this thread (including emergency resetting My Flow) without any success, let me share how I solved the problem:

• Backing up My Flow:

1. Open My Flow.
2. Click somewhere on a text.
3. Press Ctrl+A on the keyboard, this will select everything so you can export your precious stuff.
4. Open Notepad, Word or any text editor, paste the contents of My Flow and save it.
   Now that your content is backed up, proceed with the connecting steps:

• Resetting every device:
  And I'm not even sure if this is needed at all (cause I already had emergency reset and didn't have the opportunity to try without this step) so at first you could try to connect without resetting and losing your data:

1. Open My Flow.
2. Click the three dots and then Emergency reset.
3. Reset the other devices too.
   Again - I'm not sure this is required.

• Connecting devices:

1. Open opera.com/connect
2. Click Page information icon in the Address bar.
   
3. Click Site settings.
4. Opera Settings page opens and I changed every Block to Allow.
5. Now connect your devices. Reload page if needed.
6. Revert back to default settings on Opera Settings page by clicking the Reset permissions button.
7. Post back the contents of the old My Flow. Time consuming! I have 38 pages of clear format text without space before, after and between lines in Word to put back. Post by post.

I so hope this process works for you too and even without the resetting part.

@sopronman1965 I hope they are cooking something spicy otherwise I'm going back to IE! Or even Netscape, which I changed for Opera Next back then.

@newworldman I searched for "early bird" keywords in settings and flags but nothing have I found.

Any information on adding AI stuff to Beta branch?

Any information on adding AI stuff to Beta branch?

@v-m-smith Yeah, forgot to mention you have to scroll up to the beginning beforehand.

@liewcheonfong I'm glad it worked. It took me couple days trying this and that to figure it out. Did you try without the resetting part?

OK people, after trying every single solution suggested in this thread (including emergency resetting My Flow) without any success, let me share how I solved the problem:

• Backing up My Flow:

1. Open My Flow.
2. Click somewhere on a text.
3. Press Ctrl+A on the keyboard, this will select everything so you can export your precious stuff.
4. Open Notepad, Word or any text editor, paste the contents of My Flow and save it.
   Now that your content is backed up, proceed with the connecting steps:

• Resetting every device:
  And I'm not even sure if this is needed at all (cause I already had emergency reset and didn't have the opportunity to try without this step) so at first you could try to connect without resetting and losing your data:

1. Open My Flow.
2. Click the three dots and then Emergency reset.
3. Reset the other devices too.
   Again - I'm not sure this is required.

• Connecting devices:

1. Open opera.com/connect
2. Click Page information icon in the Address bar.
   
3. Click Site settings.
4. Opera Settings page opens and I changed every Block to Allow.
5. Now connect your devices. Reload page if needed.
6. Revert back to default settings on Opera Settings page by clicking the Reset permissions button.
7. Post back the contents of the old My Flow. Time consuming! I have 38 pages of clear format text without space before, after and between lines in Word to put back. Post by post.

I so hope this process works for you too and even without the resetting part.

No Opera Beta after update. Tried offline reinstall without uninstall - no success.

Too bad I had so much tabs opened.
Now tab organization is completely redefined.