Hoi,
we don't have current Dutch translation,
but if you know how joomla language files are working
please use Joomla Language Override and translate those phrases
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XXL="Hidden on Desktop"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XL="Hidden on Laptop"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_LG="Hidden on Tablet Landscape"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_MD="Hidden on Tablet Portrait"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_XS="Hidden on Mobile Portrait"
COM_SPPAGEBUILDER_GLOBAL_HIDDEN_SM="Hidden on Mobile Landscape"
alternative you can also paste them inside (at the bottom of that file)
administrator/languages/nl-NL/nl-NL.com_sppagebuilder.ini
and then translate or keep english!
then check settings for addon/row again and make corrections.