Blocked niveau 28

Gecaro974

Hi,

since few weeks, I can't go over niveau 28...
I explain:
my base is 800
my weapons are 604
my diamonds stock is 8000 max

so if I want to upgrade my weapons , I have to pay with diamonds and it requises 10K for each update ... So I can't...
To achieve the campaigns, it requires weapons at 624...
There's no other solution for upgrade ? I must buy gold ?

Thank you for your help !