1st thing to do is to deactivate all other plugin.
this is to check if there is a conflict between plugin
and if after deactivating other plugin wpsl work,
it means there is one plugin that have a conflict, so you can decide which to keep and if you can find a similiar replacement plugin.
2nd, if after deactivating nothing work.
now to further trouble shoot the problem.
– change to wordpress defualt theme and see if it works with only wpsl and htmlJA activated. if it work means your theme have some conflict and could be preventing it showing up, or your customising of css have affected the display.
3nd if nothing works, go to wp_config.php last few line
you will see debug, false
change it to debug, true
and save
then reload the website.
now you will see stuff on the top saying what is happening and why.
so search online to find a similiar problem as stated in the top
there you might find way to fix it.
a properly install wordpress should not have anything showing up when debug true is on.
if you cannot fix the problem stated in debug,
after search the whole www.
my suggestion
– read on php string
– read more on php
– get a pro to do it for you.
wpsl should not have problem running at all.
most of the time is custom css make the display missing.
or template modification cause the display go off.
I am not a pro, so I can’t help much.
That is how i solve my issues on wordpress and i hope it can help.