diff --git a/dnsapi/dns_openprovider.sh b/dnsapi/dns_openprovider.sh
index ad1e583..84058f6 100755
--- a/dnsapi/dns_openprovider.sh
+++ b/dnsapi/dns_openprovider.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env sh
+#!/bin/bash
 
 # This is the OpenProvider API wrapper for acme.sh
 #
@@ -59,16 +59,17 @@ dns_openprovider_add() {
         break
       fi
 
-      items="$(echo "$items" | sed "s|${item}||")"
+      tmpitem="$(echo "$item" | sed 's/\*/\\*/g')"
+      items="$(echo "$items" | sed "s|${tmpitem}||")"
 
       results_retrieved="$(_math "$results_retrieved" + 1)"
       new_item="$(echo "$item" | sed -n 's/.*<item>.*\(<name>\(.*\)\.'"$_domain_name"'\.'"$_domain_extension"'<\/name>.*\(<type>.*<\/type>\).*\(<value>.*<\/value>\).*\(<prio>.*<\/prio>\).*\(<ttl>.*<\/ttl>\)\).*<\/item>.*/<item><name>\2<\/name>\3\4\5\6<\/item>/p')"
       if [ -z "$new_item" ]; then
-        # Base record
+        # Domain apex
         new_item="$(echo "$item" | sed -n 's/.*<item>.*\(<name>\(.*\)'"$_domain_name"'\.'"$_domain_extension"'<\/name>.*\(<type>.*<\/type>\).*\(<value>.*<\/value>\).*\(<prio>.*<\/prio>\).*\(<ttl>.*<\/ttl>\)\).*<\/item>.*/<item><name>\2<\/name>\3\4\5\6<\/item>/p')"
       fi
 
-      if [ -z "$(echo "$new_item" | _egrep_o ".*<type>(A|AAAA|CNAME|MX|SPF|SRV|TXT|TLSA|SSHFP|CAA)<\/type>.*")" ]; then
+      if [ -z "$(echo "$new_item" | _egrep_o ".*<type>(A|AAAA|CNAME|MX|SPF|SRV|TXT|TLSA|SSHFP|CAA|NS)<\/type>.*")" ]; then
         _debug "not an allowed record type, skipping" "$new_item"
         continue
       fi
@@ -86,7 +87,7 @@ dns_openprovider_add() {
 
   _debug "Creating acme record"
   acme_record="$(echo "$fulldomain" | sed -e "s/.$_domain_name.$_domain_extension$//")"
-  _openprovider_request "$(printf '<modifyZoneDnsRequest><domain><name>%s</name><extension>%s</extension></domain><type>master</type><records><array>%s<item><name>%s</name><type>TXT</type><value>%s</value><ttl>86400</ttl></item></array></records></modifyZoneDnsRequest>' "$_domain_name" "$_domain_extension" "$existing_items" "$acme_record" "$txtvalue")"
+  _openprovider_request "$(printf '<modifyZoneDnsRequest><domain><name>%s</name><extension>%s</extension></domain><type>master</type><records><array>%s<item><name>%s</name><type>TXT</type><value>%s</value><ttl>600</ttl></item></array></records></modifyZoneDnsRequest>' "$_domain_name" "$_domain_extension" "$existing_items" "$acme_record" "$txtvalue")"
 
   return 0
 }
@@ -136,7 +137,8 @@ dns_openprovider_rm() {
         break
       fi
 
-      items="$(echo "$items" | sed "s|${item}||")"
+      tmpitem="$(echo "$item" | sed 's/\*/\\*/g')"
+      items="$(echo "$items" | sed "s|${tmpitem}||")"
 
       results_retrieved="$(_math "$results_retrieved" + 1)"
       if ! echo "$item" | grep -v "$fulldomain"; then
@@ -147,11 +149,11 @@ dns_openprovider_rm() {
       new_item="$(echo "$item" | sed -n 's/.*<item>.*\(<name>\(.*\)\.'"$_domain_name"'\.'"$_domain_extension"'<\/name>.*\(<type>.*<\/type>\).*\(<value>.*<\/value>\).*\(<prio>.*<\/prio>\).*\(<ttl>.*<\/ttl>\)\).*<\/item>.*/<item><name>\2<\/name>\3\4\5\6<\/item>/p')"
 
       if [ -z "$new_item" ]; then
-        # Base record
+        # domain apex
         new_item="$(echo "$item" | sed -n 's/.*<item>.*\(<name>\(.*\)'"$_domain_name"'\.'"$_domain_extension"'<\/name>.*\(<type>.*<\/type>\).*\(<value>.*<\/value>\).*\(<prio>.*<\/prio>\).*\(<ttl>.*<\/ttl>\)\).*<\/item>.*/<item><name>\2<\/name>\3\4\5\6<\/item>/p')"
       fi
 
-      if [ -z "$(echo "$new_item" | _egrep_o ".*<type>(A|AAAA|CNAME|MX|SPF|SRV|TXT|TLSA|SSHFP|CAA)<\/type>.*")" ]; then
+      if [ -z "$(echo "$new_item" | _egrep_o ".*<type>(A|AAAA|CNAME|MX|SPF|SRV|TXT|TLSA|SSHFP|CAA|NS)<\/type>.*")" ]; then
         _debug "not an allowed record type, skipping" "$new_item"
         continue
       fi
@@ -205,7 +207,8 @@ _get_root() {
         break
       fi
 
-      items="$(echo "$items" | sed "s|${item}||")"
+      tmpitem="$(echo "$item" | sed 's/\*/\\*/g')"
+      items="$(echo "$items" | sed "s|${tmpitem}||")"
 
       results_retrieved="$(_math "$results_retrieved" + 1)"