Can they block my funds like PayPal if I had big withdrawals ?

And actually what about bank transfer ? How does it look like ?

And verification ? Do I need to provide them any my personal info ?
Well they won't block like paypal. Verification of mini can be done by adding mobile no and it will raise the limit a bit. Well, bank transfer and withdrawal are supported for russian and nearby country users like georgia, ukraine etc i guess. Well, there are good exhchangers who will give you $ for webmoney via different alternative modes.