database issues after changing site url

thank you so much for this amazing plugin ..that latest version of this gallery was killing my site speed wise

i developed an updated site on a subdomain so i changed the wordpress site url ….from www to beta.mysite.com ……..on the beta site when i tried to add a gallery and an image to it …it didn’t keep it …now i’ve moved the site back to live at www and i just noticed the misssing images …now the behavioir is a little different ..i add an image ..i see the image and the gallery in the admin …but it doesn’t show as counting in nextgen total gallery count….and i try to display the image by calling to its id and nothing displays at all

anyway to repair this mess ? i remember a site before having issues changing the site url ..everything ok but galleries had issues …any help would be greatly appreciated trying to hide the issues right now

https://wordpress.org/plugins/nextcellent-gallery-nextgen-legacy/