diff --git a/changelog/unreleased/appprovider-url-object-fixes.md b/changelog/unreleased/appprovider-url-object-fixes.md
new file mode 100644
index 0000000000..375af1cc5a
--- /dev/null
+++ b/changelog/unreleased/appprovider-url-object-fixes.md
@@ -0,0 +1,4 @@
+Bugfix: Fixes for http appprovider endpoints
+
+https://github.com/cs3org/reva/pull/2024
+https://github.com/cs3org/reva/pull/1968
diff --git a/internal/grpc/services/appregistry/appregistry_test.go b/internal/grpc/services/appregistry/appregistry_test.go
index 684a1c3ce6..bf9c330412 100644
--- a/internal/grpc/services/appregistry/appregistry_test.go
+++ b/internal/grpc/services/appregistry/appregistry_test.go
@@ -85,7 +85,7 @@ func Test_ListAppProviders(t *testing.T) {
 				Providers: []*registrypb.ProviderInfo{
 					{
 						Address:   "",
-						MimeTypes: []string{"text/plain"},
+						MimeTypes: []string{},
 					},
 				},
 			},
@@ -104,7 +104,7 @@ func Test_ListAppProviders(t *testing.T) {
 				Providers: []*registrypb.ProviderInfo{
 					{
 						Address:   "",
-						MimeTypes: []string{"text/plain"},
+						MimeTypes: []string{},
 					},
 				},
 			},
diff --git a/internal/http/services/appprovider/appprovider.go b/internal/http/services/appprovider/appprovider.go
index 9b131e64d0..22c0a3e775 100644
--- a/internal/http/services/appprovider/appprovider.go
+++ b/internal/http/services/appprovider/appprovider.go
@@ -127,6 +127,12 @@ func (s *svc) handleList(w http.ResponseWriter, r *http.Request) {
 	mimeTypes := listRes.MimeTypes
 	filterAppsByUserAgent(mimeTypes, r.UserAgent())
 
+	filterMimeTypes(mimeTypes)
+
+	if mimeTypes == nil {
+		mimeTypes = make(map[string]*appregistry.AppProviderList) // ensure array empty object instead of null in json
+	}
+
 	js, err := json.Marshal(map[string]interface{}{"mime-types": mimeTypes})
 	if err != nil {
 		ocmd.WriteError(w, r, ocmd.APIErrorServerError, "error marshalling JSON response", err)
@@ -183,6 +189,24 @@ func (s *svc) handleOpen(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func filterMimeTypes(mimeTypes map[string]*appregistry.AppProviderList) {
+	for m, providers := range mimeTypes {
+		apps := []*appregistry.ProviderInfo{}
+		for _, p := range providers.AppProviders {
+			p.Address = "" // address is internal only and not needed in the client
+			// apps are called by name, so if it has no name you cannot call it. Therefore we should not advertise it.
+			if p.Name != "" {
+				apps = append(apps, p)
+			}
+		}
+		if len(apps) > 0 {
+			mimeTypes[m] = &appregistry.AppProviderList{AppProviders: apps}
+		} else {
+			delete(mimeTypes, m)
+		}
+	}
+}
+
 func filterAppsByUserAgent(mimeTypes map[string]*appregistry.AppProviderList, userAgent string) {
 	ua := ua.Parse(userAgent)
 	if ua.Desktop {
diff --git a/pkg/app/provider/wopi/wopi.go b/pkg/app/provider/wopi/wopi.go
index f687047d98..0f731d76af 100644
--- a/pkg/app/provider/wopi/wopi.go
+++ b/pkg/app/provider/wopi/wopi.go
@@ -312,7 +312,8 @@ func (p *wopiProvider) getAccessTokenTTL(ctx context.Context) (string, error) {
 	}
 
 	if claims, ok := token.Claims.(*jwt.StandardClaims); ok && token.Valid {
-		return strconv.FormatInt(claims.ExpiresAt, 10), nil
+		// milliseconds since Jan 1, 1970 UTC as required in https://wopi.readthedocs.io/projects/wopirest/en/latest/concepts.html?highlight=access_token_ttl#term-access-token-ttl
+		return strconv.FormatInt(claims.ExpiresAt*1000, 10), nil
 	}
 
 	return "", errtypes.InvalidCredentials("wopi: invalid token present in ctx")
diff --git a/pkg/app/registry/static/static.go b/pkg/app/registry/static/static.go
index 0d975ba226..6ddb63864a 100644
--- a/pkg/app/registry/static/static.go
+++ b/pkg/app/registry/static/static.go
@@ -44,7 +44,7 @@ func (c *config) init() {
 		c.Providers = map[string]*registrypb.ProviderInfo{
 			sharedconf.GetGatewaySVC(""): {
 				Address:   sharedconf.GetGatewaySVC(""),
-				MimeTypes: []string{"text/plain"},
+				MimeTypes: []string{},
 			},
 		}
 	}