diff --git a/lemur/common/celery.py b/lemur/common/celery.py
index b7f65886..f2a2f826 100644
--- a/lemur/common/celery.py
+++ b/lemur/common/celery.py
@@ -21,7 +21,10 @@ from lemur.pending_certificates import service as pending_certificate_service
 from lemur.plugins.base import plugins
 from lemur.sources.cli import clean, sync, validate_sources
 
-flask_app = create_app()
+if current_app:
+    flask_app = current_app
+else:
+    flask_app = create_app()
 
 
 def make_celery(app):
diff --git a/lemur/dns_providers/models.py b/lemur/dns_providers/models.py
index d48cd0d1..435a2398 100644
--- a/lemur/dns_providers/models.py
+++ b/lemur/dns_providers/models.py
@@ -23,7 +23,8 @@ class DnsProvider(db.Model):
     status = Column(String(length=128), nullable=True)
     options = Column(JSON, nullable=True)
     domains = Column(JSON, nullable=True)
-    certificates = relationship("Certificate", backref='dns_provider', foreign_keys='Certificate.dns_provider_id')
+    certificates = relationship("Certificate", backref='dns_provider', foreign_keys='Certificate.dns_provider_id',
+                                lazy='dynamic')
 
     def __init__(self, name, description, provider_type, credentials):
         self.name = name
diff --git a/lemur/plugins/lemur_acme/plugin.py b/lemur/plugins/lemur_acme/plugin.py
index 62e647c4..26ca8ffc 100644
--- a/lemur/plugins/lemur_acme/plugin.py
+++ b/lemur/plugins/lemur_acme/plugin.py
@@ -333,9 +333,10 @@ class ACMEIssuerPlugin(IssuerPlugin):
 
     def __init__(self, *args, **kwargs):
         super(ACMEIssuerPlugin, self).__init__(*args, **kwargs)
-        self.acme = AcmeHandler()
 
     def get_dns_provider(self, type):
+        self.acme = AcmeHandler()
+
         provider_types = {
             'cloudflare': cloudflare,
             'dyn': dyn,
@@ -347,12 +348,14 @@ class ACMEIssuerPlugin(IssuerPlugin):
         return provider
 
     def get_all_zones(self, dns_provider):
+        self.acme = AcmeHandler()
         dns_provider_options = json.loads(dns_provider.credentials)
         account_number = dns_provider_options.get("account_id")
         dns_provider_plugin = self.get_dns_provider(dns_provider.provider_type)
         return dns_provider_plugin.get_zones(account_number=account_number)
 
     def get_ordered_certificate(self, pending_cert):
+        self.acme = AcmeHandler()
         acme_client, registration = self.acme.setup_acme_client(pending_cert.authority)
         order_info = authorization_service.get(pending_cert.external_id)
         if pending_cert.dns_provider_id:
@@ -388,6 +391,7 @@ class ACMEIssuerPlugin(IssuerPlugin):
         return cert
 
     def get_ordered_certificates(self, pending_certs):
+        self.acme = AcmeHandler()
         pending = []
         certs = []
         for pending_cert in pending_certs:
@@ -470,6 +474,7 @@ class ACMEIssuerPlugin(IssuerPlugin):
         :param issuer_options:
         :return: :raise Exception:
         """
+        self.acme = AcmeHandler()
         authority = issuer_options.get('authority')
         create_immediately = issuer_options.get('create_immediately', False)
         acme_client, registration = self.acme.setup_acme_client(authority)