png images not displayed after changing logo image

I need help with personalisation of my Dark mode template on Joomla 5.
Demo data is installed and worked well until I uploaded and changed the logo photo trough SIte template styles/ Template/ Features/ Branding. SInce that moment, site is not displaying any png image. Only .jpg image (video on front page) is displayed. If I return the old logo.png image, images still don't show.
Also, I don't see any button or field at Logo styles option.

I use latest Joomla 5.0.2.

Any advice please? Thanks.
Marin
 

Hello,

Please provide the link to your website. If you are using the temporary url provided by your hosting provider, it could be the reason for wrong paths to the files.

Regards,
Milos

cardanoclub.io
I have made it available temporary.

Thanks

Hello,

Access to the images your website is trying to load is forbidden (error 403). For example, check this image:

Please check the permissions of your files or consult your web hosting provider.

Regards,
Milos