[Cloning not working at all in Photo 1.10.3 on an iMac]

Guys

Thanks for offering to help.

As I said - I am a newbie to using Photo so couldn't get my head around it a bit.

I noticed the Opacity was set at 0% - derr!! - so re-set it to 100% and all works fine now.

Thanks for your help.

Halfwit of Wiltshire!

[Cloning not working at all in Photo 1.10.3 on an iMac]

Hi, I just cannot seem to get the Clone tool to work at all in Photo 1.10.3 on my iMac running Big Sur 11.6.  

The source point just will not lock in with the Option key a mouse click.

I have tried creating a new layer and selecting Current Layer and Below for the tool to work on but that won't work either.

I am most definitely NOT a power user but have watched the Cloning tutorial and am following the directions there but with zero effect!

Help please!