are you on OSGI?

no. That location is temporary storage location and the files will be deleted after a period of time

https://experienceleague.adobe.com/docs/experience-manager-65/administering/security/ldap-config.html?lang=en

No, the fields are searchAble on the top  left you can create your queries 

I think your best option is to add custom columns to the inbox screen and display the appropriate information under those columns

Glad it worked for you 

take a look at this xdp The script is at the form1 event form1::docReady - (JavaScript, client)//+ GENERATED - DO NOT EDIT (ID:050B56E3-17A2-4D55-8A10-6B58FAB8E0F9 CRC:2450640584)//+ Type: Action//+ Result1: SetPresence("$Node2","hidden")//+ Node2: form1[0].#pageSet[0].Page1[0].HTTPSubmitButton1[0]/...

go to http://localhost:4502/system/console/bundles Click on your bundle scroll down and check if all entries in the Declarative Service Components are active  

What version of AEM Forms? can you try with different browsers ?

https://experienceleague.adobe.com/docs/experience-manager-learn/forms/adaptive-forms/inline-images-adaptive-forms.html?lang=en may be the above link is helpful