hi steven i don't know how to start a new post so i try this to reach u
Once you've selected the forum you want to post in (such as "WP-SimpleViewer WordPress Plugin"), you'll find the 'Post new topic' link just above the second blue bar at the right-hand side of the page.
but when i want to manage some old galleries i only find in the list the latest 200+ ones and there is no indication to go to next page or something like that
The 'Manage Galleries' page lists all galleries in single vertical list (rather than on individual pages) so if there are too many galleries for them all to be visible at once, a vertical scrollbar should appear on your page so that you can access them.
Are you using a theme that affects the layout or design of your WordPress Dashboard (the admin backend)?
If so, try temporarily disabling it to see if this makes a difference.
Also, you might like to try viewing the 'Manage Galleries' page in a different browser to see if this helps.
Also, I notice that you currently use WP-SimpleViewer v126.96.36.199.
I'm not sure that it will solve your problem but you might like to try updating your plugin to the current version (v188.8.131.52) as a few bugs have been fixed since v184.108.40.206. (Please see the plugin's Version History for details.)
It can be downloaded from its own support page here.
If you continue to experience difficulties, I would be happy to help further but it would help if I had access to your web server and WordPress site (so that I can check things out for myself).
If you are agreeable to this, then please let me know and I'll send you an email address where you can forward me your FTP and WordPress login details and I'll do my best to figure out the cause of your problem.
SimpleViewer Support Team