Well the 2nd issue is not replicated at our end .I tried it many times on local setup.
Please share your server
php error log
contact hosting provider to find it .
this might give us some hint what could be the problem .
for 5 :
please copy this code exactly and paste it in your editor :
https://gist.github.com/alexvibealex/df20d799b0a7a4a2b4b5bff48dcaa3b4
14 : well that would require a bit of custom code .
We will be sharing it but please share a screenshot exactly wakanda search you would like it to be .
.
